The Environment Agency undertakes fisheries monitoring work on rivers, lakes and transitional and coastal waters (TraC).

This dataset contains site and survey information, the numbers and species of fish caught, fish lengths, weights and ages (where available), for all the freshwater fish surveys carried out across England from 1975 onwards.

Notes: - These survey data are stored in an archive more commonly known as the NFPD (National Fish Populations Database). - This dataset contains Freshwater fish surveys only. - Third party data held on the NFPD are excluded from the dataset. - Some historic surveys (particularly in Anglian Central) have incorrect survey lengths and survey widths. These can be identified by a survey length of 1 and a survey width that is equal to the area. The survey areas are correct. This is due to the migration of old historic data from previous databases into the NFPD. - Approved for Access under AfA347.

Please see the Dataset Documentation for further detail.

The Southeast Fisheries Science Center Mississippi Laboratories conducts standardized fisheries independent resource surveys in the Gulf of Mexico, South Atlantic, and U.S. Caribbean to provide abundance and distribution information to support regional and international stock assessments. The reef fish survey is conducted primarily on the outer continental shelf of the Gulf of Mexico along topographic features (e.g. reefs, banks and ledges) between Brownsville, TX to the Dry Tortugas, FL. A two-stage sampling design is used with the first stage or primary sampling units being blocks 10 minutes of latitude by 10 minutes of longitude and the second stage being randomly selected sites within the blocks. The first-stage units are selected by stratified random sampling, with stratum boundaries defined by geographic region (4 regions: South Florida, Northeast Gulf, Louisiana-Texas Shelf, and South Texas), and by reef habitat area (Blocks 20 km² reef). Sampling is conducted using a video camera array, vertical line gear and chevron traps with approximately 400 video cameras, 400 vertical line and 100 traps conducted. The camera array consists of four housings positioned orthogonally and center mounted at a height of 51 cm above the bottom of the array. Each housing contains a pair of black-and-white Videre stereo cameras along with a color mpeg camera. Sampling of reef sites with video cameras occurs only during daylight hours, with the first gear deployment one hour after sunrise and the last gear retrieval one hour prior to sunset. Video arrays soak for 35 minutes. At sites selected for fish sampling, a chevron (or arrow) fish trap or vertical line is used to capture fish for biological samples. The chevron fish trap is constructed with 1.5-inch vinyl-clad mesh. In its greatest dimensions, the trap is 1.76 m in length, 1.52 m in width and 0.61 m in depth. A 0.4 m by 0.29 m blow out panel is placed on one side and kept closed using 7-day magnesium releases. The fish trap soaks for one hour and is baited with squid. The vertical line consists of a mainline with 10 gangions. One 8/0, 11/0 or 15/0 circle hook is attached to each gangion and baited with mackerel (Scomber scombrus). The mainline is soaked for five minutes. Most of the animals captured are measured, weighed, tagged and then released. Those individuals which are moribund or have expired are retained to collect biological data pertaining to the life history of these fishes. Habitat mapping is conducted using the SIMRAD ME70 multibeam echosounder. At each site hydrological data is collected using Conductivity Temperature Depth sensor (CTD).

Total numbers of individual fish identified during the Cefas Young Fish Survey (YFS) which ran from 1981 to 2010. The survey deployed a light 2-meter beam trawl to survey inshore locations for small / young fish around the British Isles, predominantly along the south and east coasts. Total numbers of fish (identified to species or if not to the highest taxonomic level) were recorded at each station, and were measured in the majority of cases. The surveys were primarily undertaken to evaluate the abundance of juvenile sole and plaice, as well as providing further information on the abundance of other species of fish. Alongside the main 'Young Fish Survey Data 1981 to 2010' data table are three further data tables marked as 'YFS_DWC' which give the same data in EventCore format and a readme file which describes historic versions of metadata which this record has replaced.

The dataset is composed of two data tables containing information from electrofishing surveys conducted in the Catskill and Adirondack regions. The first data table contains fish collection information and the second data table contains information on the sampled reaches. First posted September 25, 2018, ver. 1.0 Revised July 2019, ver. 2.0 Revised November 2020, ver. 3.0 Revised March 2022, ver. 4.0 Revised September 2022, ver. 5.0 Revised February 2023, ver. 6.0 Revised December 2023, ver. 7.0 Version 7.0: This version of the dataset has the same structure (two data tables containing the same column headings) as Versions 6.0, 5.0, 4.0, 3.0, 2.0, and 1.0 but includes the addition of data from electrofishing surveys conducted in 2023 at 8 sites in the Catskill Mountain region and 2 sites in the Adirondack Mountain region. All data in Version 6.0 have been retained in Version 7.0 and are unchanged. Version 6.0: This version of the dataset has the same structure (two data tables containing the same column headings) as Versions 5.0, 4.0, 3.0, 2.0, and 1.0 but includes the addition of data from electrofishing surveys conducted in 2022 at 8 sites in the Catskill Mountain region and 1 site in the Adirondack Mountain region. All data in Version 5.0 have been retained in Version 6.0 and are unchanged. Version 5.0: This version of the dataset has the same structure (two data tables containing the same column headings) as Versions 4.0, 3.0, 2.0, and 1.0 but includes the addition of data from electrofishing surveys conducted in 2021 at 11 sites in the Catskill Mountain region. All data in Version 4.0 have been retained in Version 5.0 and are unchanged with one exception: the USGS Station Number associated with the site ID ‘ElkBRest’ has been changed from 0136219205 to 420312074273701. Version 5.0 data are available upon request. Version 4.0: This version of the dataset has the same structure (two data tables containing the same column headings) as Versions 3.0, 2.0, and 1.0 but includes the addition of data from electrofishing surveys conducted in 2020 at 40 sites in the Adirondack Mountain region and 11 sites in the Catskill Mountain region. All data in Version 3.0 have been retained in Version 4.0 and are unchanged with two exceptions: 1) the species identification of 4 fish captured in Browns Creek on 7/29/14 have been changed from Northern Pearl Dace (Margariscus nachtriebi) to Allegheny Pearl Dace (Margariscus margarita) as a result of subsequent expert assessment of archived specimens, and 2) the USGS Station Number associated with the site ID ‘Windfall’ has been changed from 434813074505701 to 04253660. Version 4.0 data are available upon request. Version 3.0: This version of the dataset has the same structure (two data tables containing the same column headings) as Versions 2.0 and 1.0 but includes the addition of data from electrofishing surveys conducted in the upper Neversink River and upper Rondout Creek and their tributaries in the Catskill region during the period 1988-2019. All data in Version 2.0 have been retained in Version 3.0 and are unchanged with two exceptions: 1) the “Year” column in both data tables has been replaced with a “Date” column providing the exact date a survey was conducted, and 2) the USGS Station Number associated with the site ID ‘Slide’ on the West Branch Neversink River has been changed from 420034074253201 to 0143402120. Version 3.0 data are available upon request. Version 2.0: This version of the dataset has the same structure (two data tables containing the same column headings) as Version 1.0 but includes the addition of data from electrofishing surveys conducted on the Esopus Creek and its tributaries in the Catskill region during the period 2009-2018. All data in Version 1.0 have been retained and are unchanged with the exception of a correction to the USGS Station Number associated with Wheeler Creek. Version 2.0 data are available upon request. Version 1.0: This version of the dataset contains two tables. One contains fish collection information and has 11 columns and the other contains information on the sampled reaches and has 6 columns. All data in Version 1.0 are contained in Version 2.0. Version 1.0 data are available upon request.

The Southeast Fisheries Science Center Mississippi Laboratories conducts standardized reef fish video surveys in the Gulf of Mexico since 1992. The survey primarily occurs on the outer continental shelf along topographic features (e.g. reefs, banks and ledges) between Brownsville, TX to the Dry Tortugas, FL, and provides fisheries independent indices of reef fish abundance for use in stock assessments.

This dataset contains records of bony fishes and elasmobranchs collected by Reef Life Survey (RLS) divers along 50m transects on shallow rocky and coral reefs, worldwide. Abundance information is available for all records found within quantitative survey limits (50 x 5 m swathes during a single swim either side of the transect line, each distinguished as a Block), and out-of-survey records are identified as presence-only (Method 0). Although surveys are undertaken as part of monitoring programs at particular locations (mostly in Australia), this dataset contains does not include repeat surveys of sites.

The Environment Agency undertakes fisheries monitoring work on rivers, lakes and transitional and coastal waters (TraC).

This dataset includes site and survey information, together with a detailed breakdown of the salmonid age data into numbers of 0+, >0+, 1+, >1+ age bands (where available), for freshwater fish surveys carried out across England from 1975 onwards.

Notes: - These survey data are stored in an archive more commonly known as the NFPD (National Fish Populations Database). - This dataset contains Freshwater fish surveys only. - Third party data held on the NFPD are excluded from the dataset. - Some historic surveys (particularly in Anglian Central) have incorrect survey lengths and survey widths. These can be identified by a survey length of 1 and a survey width that is equal to the area. The survey areas are correct. This is due to the migration of old historic data from previous databases into the NFPD. - Approved for Access under AfA347. - The dataset 'Freshwater fish surveys (NFPD)' may also be relevant, it contains fish lengths, weights, and the raw age data (where available).

Please see the Dataset Documentation for further detail. Attribution statement: © Environment Agency copyright and/or database right 2017. All rights reserved.

General Fish Surveys compare trends among the fishery species in Lake Perris utilizing data that calculates catch per unit of effort (CPUE), relative abundance of each species and several population indices including length distribution, weight-length relationships, relative weight (Wr), and proportional size distributions (PSD) This data and metadata were submitted by California Department of Fish and Wildlife (CDFW) Staff though the Data Management Plan (DMP) framework with the id: DMP000450. For more information, please visit https://wildlife.ca.gov/Data/Sci-Data.

General Fish Surveys compare trends among the fishery species in Lake Skinner utilizing data that calculates catch per unit of effort (CPUE), relative abundance of each species and several population indices including length distribution, weight-length relationships, relative weight (Wr), and proportional size distributions (PSD)

This data and metadata were submitted by California Department of Fish and Wildlife (CDFW) Staff though the Data Management Plan (DMP) framework with the id: DMP000449. For more information, please visit https://wildlife.ca.gov/Data/Sci-Data.

These reports summarizes work to monitor fall subsistence fisheriues on Colville River. In addition reports for Ublutuoch, Fish Creek and the Helmricks winter fishery are provided. Reports for burbot and broad whitefish are also available. The Colville River fishery is conducted using gillnets each fall after freeze-up in the Niġliq Channel of the Colville River. The monitoring program began in 1985 when the North Slope Borough, in consultation with local fisherman and industry, requested information on the potential impacts to fish health from activities associated with exploration and development of oil and gas near Prudhoe Bay and in the Colville River delta. Initial surveys in the Colville River delta sought only to obtain estimates of the total subsistence and commercial fishing effort and harvest during the fall under-ice fishery. Over the years, the objectives of the project have evolved to include quantifying temporal trends in fishing effort, harvest results, and assessments of the general health of the fishery. It also includes input from fishers about their perception of the health of the fishery to determine monitoring goals. In 2020, studies to monitor the summer subsistence gillnet harvest of fish in the Nigliq Channel of the Colville were initiated.

The fish dataset presents results from High Mountain Lakes (HML), SLIP (Sierra Lakes Inventory), and Redwood Sciences Laboratory (RSL) project fishery surveys. Both projects collected data on high elevation waters in the Sierra Nevada and mountains of Northern California using a standard protocol. Surveys of fish, amphibians, habitat, and stream barriers were done at each site between late-May and October. Fish surveys were mainly done using standardized 6 panel monofilament gill nets, set for 8-12 hours. Fish species, length, weight, and sex are recorded for each individual. As many sites were only visited once, the data presented represent a "snapshot" view of the fish population in a particular lake. SLIP surveys were done in the John Muir Wilderness by Roland Knapp's crews in 1995-1996. HML surveys were done in Regions 2, 4 and 6 by CA DFW crews between 2001 and 2010. CDFW crews did not survey within National Park boundaries and no SLIP data from National Parks is included here. RSL surveys were conducted between 2001 and 2006, and additional surveys in Northern California ranges were conducted by HML crews in 2008 and 2010. As of May 2010, approximately 85% of the total mapped waters in the High Mountain Lakes range have been surveyed. It should be noted that the High Mountain Lakes expanded in 2007 to include water bodies in cascades frog range. "Baseline" survey types indicate a full survey was done at the site, including amphibian, fish, habitat characteristics, tributary characteristics, and photos. Generally this survey type occurs during the initial visit to a particular site. "Monitoring" surveys are repeat surveys of fish or amphibian populations at a site, and generally do not include habitat or stream barrier data. WHAT EACH RECORD REPRESENTS: This dataset represents field data collected in high elevation Sierra Nevada and Northern California lakes, meadows, streams, and springs. If no fish were observed, each record represents a single fish survey. If fish are present, a record exists for each species observed during a single survey. According to protocol, lakes with fish are surveyed with gill nets and re-surveyed every fifteen years. Lakes with gill net surveys have average, maximum, and minimum fish length and weight for each species caught at each lake. Visual surveys took place in meadows and streams; if fish were present in these waters a record exists which identifies the species. Lakes are identified by a unique "CA Lakes" identifying number corresponding to CDFW's CA_Lakes.shp GIS dataset. Some sites may not yet exist on CA_Lakes.shp: the GIS dataset is updated annually with data obtained by HML crews and digitized by CDFW Staff. Stream sites do not exist on CA_Lakes, but HML is surveying and monitoring streams with known yellow-legged frog populations, and these surveys are part of the amphibian dataset. All sites presented in this dataset are represented on the High_mountain_lakes.shp GIS dataset. Contact Sarah Mussulman (916) 358-2838 for additional information about High_mountain_lakes.shp.

The fish dataset presents results from High Mountain Lakes (HML), SLIP (Sierra Lakes Inventory), and Redwood Sciences Laboratory (RSL) project fishery surveys. Both projects collected data on high elevation waters in the Sierra Nevada and mountains of Northern California using a standard protocol. Surveys of fish, amphibians, habitat, and stream barriers were done at each site between late-May and October. Fish surveys were mainly done using standardized 6 panel monofilament gill nets, set for 8-12 hours. Fish species, length, weight, and sex are recorded for each individual. As many sites were only visited once, the data presented represent a "snapshot" view of the fish population in a particular lake. SLIP surveys were done in the John Muir Wilderness by Roland Knapp's crews in 1995-1996. HML surveys were done in Regions 2, 4 and 6 by CA DFW crews between 2001 and 2010. CDFW crews did not survey within National Park boundaries and no SLIP data from National Parks is included here. RSL surveys were conducted between 2001 and 2006, and additional surveys in Northern California ranges were conducted by HML crews in 2008 and 2010. As of May 2010, approximately 85% of the total mapped waters in the High Mountain Lakes range have been surveyed. It should be noted that the High Mountain Lakes expanded in 2007 to include water bodies in cascades frog range. "Baseline" survey types indicate a full survey was done at the site, including amphibian, fish, habitat characteristics, tributary characteristics, and photos. Generally this survey type occurs during the initial visit to a particular site. "Monitoring" surveys are repeat surveys of fish or amphibian populations at a site, and generally do not include habitat or stream barrier data. WHAT EACH RECORD REPRESENTS: This dataset represents field data collected in high elevation Sierra Nevada and Northern California lakes, meadows, streams, and springs. If no fish were observed, each record represents a single fish survey. If fish are present, a record exists for each species observed during a single survey. According to protocol, lakes with fish are surveyed with gill nets and re-surveyed every fifteen years. Lakes with gill net surveys have average, maximum, and minimum fish length and weight for each species caught at each lake. Visual surveys took place in meadows and streams; if fish were present in these waters a record exists which identifies the species. Lakes are identified by a unique "CA Lakes" identifying number corresponding to CDFW's CA_Lakes.shp GIS dataset. Some sites may not yet exist on CA_Lakes.shp: the GIS dataset is updated annually with data obtained by HML crews and digitized by CDFW Staff. Stream sites do not exist on CA_Lakes, but HML is surveying and monitoring streams with known yellow-legged frog populations, and these surveys are part of the amphibian dataset. All sites presented in this dataset are represented on the High_mountain_lakes.shp GIS dataset. Contact Sarah Mussulman (916) 358-2838 for additional information about High_mountain_lakes.shp.

These products are Approved for Access under AfA347.

The National Fish Populations Database (NFPD) holds information collected from fisheries monitoring work on rivers, lakes and transitional and coastal waters (TraC). This monitoring work is undertaken by the Environment Agency and by third parties. All the relevant data associated with NFPD freshwater fish surveys, such as survey information, site information, the numbers and species of fish caught, fish lengths, weights and ages (where available), can be obtained from these relational datasets. The data is provided as a set of relational data tables because there is just too much data to include all relevant information in all tables. A basic understanding of fisheries science and relational databases is assumed. Available datasets/tables: • Freshwater Fish Counts for all species for all Areas and all Years • Freshwater Salmonid Age Band (0+, >0+, age unknown) Counts for all Areas and Years • Freshwater Salmonid Age Band (0+, 1+, >1+, age unknown) Counts for all Areas and Years • Breakdown of freshwater fish count data types (individually measured, banded measured and bulk counted fish) • Individually measured freshwater fish records • Banded measured freshwater fish records • Bulk counted freshwater fish records The tables can be related to each other using any one of the unique identifiers - survey_id, survey_species_id, species_id and species_run_id. However, the Freshwater Fish Counts and the Salmonid Age Band datasets have no dependence on the other tables and can therefore also be used in isolation. Third party data and surveys not flagged as ‘Completed’ are excluded. For more information about the available datasets/tables, please see the Dataset Documentation. Attribution statement: © Environment Agency copyright and/or database right 2017. All rights reserved.

In situ visual surveys were conducted to generate size estimates and species composition of fish community habitat measurements (ledge height, macroalgal ht, sessile invertebrate ht) to characterize seafloor relief at survey locations

PLEASE NOTE: This dataset has been superseded by the Transitional & coastal water fish surveys (NFPD) and is now retired.

These products are Approved for Access under AfA347. The National Fish Populations Database (NFPD) holds information collected from fisheries monitoring work on rivers, lakes and transitional and coastal waters (TraC). This monitoring work is undertaken by the Environment Agency and by third parties. All the relevant data associated with NFPD TraC fish surveys, such as survey information, site information, the numbers and species of fish caught, fish lengths, weights and ages (where available), can be obtained from these relational datasets. The data is provided as a set of relational data tables because there is just too much data to include all relevant information in all tables. A basic understanding of fisheries science and relational databases is assumed. Available datasets/tables: • TraC Fish Counts for all species for all Areas and all Years • Breakdown of TraC fish count data types (individually measured, banded measured and bulk counted fish) • Individually measured TraC fish records • Banded measured TraC fish records • Bulk counted TraC fish records The tables can be related to each other using any one of the unique identifiers - survey_id, survey_species_id, species_id and species_run_id. However, the TraC Fish count dataset has no dependence on the other tables and can therefore also be used in isolation. Third party data and surveys not flagged as ‘Completed’ are excluded. For more information about the available datasets/tables, please see the Dataset Documentation. Attribution statement: © Environment Agency copyright and/or database right 2017. All rights reserved.

The stationary point count (SPC) method is used to conduct reef fish surveys in the Hawaiian and Mariana Archipelagos, American Samoa, and the Pacific Remote Island Areas as part of the NOAA National Coral Reef Monitoring Program (NCRMP). The SPC method catalogs the diversity (species richness), abundance (numeric density) and biomass (fish mass per unit area) of diurnally active reef fish assemblages in shallow-water (less than 30 m) hard-bottom habitats. Visual estimates of benthic cover and topographic complexity are also recorded, with benthic organisms grouped into broad functional categories (e.g., 'Hard Coral', 'Macroalgae'). A stratified random sampling (StRS) design is employed to survey the coral reef ecosystems throughout the U.S.-Pacific regions. For all regions, the survey domain encompasses the majority of the mapped area of reef and hard bottom habitats and the stratification includes island, reef zone, and depth, with the exception of the Main Hawaiian Islands that includes habitat structure type as well. Sampling effort is allocated based on strata area. The reef fish and benthic estimate data provided in this data set were collected during SPC surveys as part of the NOAA Pacific Islands Fisheries Science Center (PIFSC), Ecosystem Sciences Division (formerly the Coral Reef Ecosystem Division) led NCRMP missions around the Pacific Remote Island Areas from 2014 through 2018.

This record describes the fish survey data collected as part of the 1993-1996 South East Fishery Ecosystem Study undertaken by CSIRO Division of Fisheries. Demersal trawls (33 per survey) were carried out at a range of depths (25m to 200m) on seven transects across the continental shelf in eastern Bass Strait, south-west Victoria, and south-west NSW waters. Data were collected in July 1993 (cruise SS 05/93), August 1994 (cruise SS 05/94), April 1996 (cruise SS 02/96) and November 1996 (cruise SS 06/96). Extensive biological and distribution data were collected on a wide range of demersal fish including SEF quota species such as jack mackerel, tiger flathead, school whiting, redfish, spotted warehou and jackass morwong, among many others. All species, length-frequency, and other catch related data are held in the main Southern Surveyor biological database in Hobart. Other attributes recorded include weight, sex, and gonad maturation stage, for certain target species. Additional samples were taken from this material for biological analyses of stomach contents, stable isotopes, otolith analyses, etc. (see separate metadata entry). In addition to the broad-scale, transect-based surveys described above, representatives of 4 separate habitat types (Big Gutter, Gabo Reef, Big Horsehoe and Broken Reef) were sampled more intensively and the data will be analysed along with the broad-scale survey dataset.

General Fish Surveys compare trends among the fishery species in Lake Silverwood utilizing data that calculates catch per unit of effort (CPUE), relative abundance of each species and several population indices including length distribution, weight-length relationships, relative weight (Wr), and proportional size distributions (PSD).

This data and metadata were submitted by California Department of Fish and Wildlife (CDFW) Staff though the Data Management Plan (DMP) framework with the id: DMP000451. For more information, please visit https://wildlife.ca.gov/Data/Sci-Data.

The dataset contains fish surveys from deep natural reefs in the northern Santa Barbara Channel Islands, Southern California, mainly at reefs named Piggy Bank, Footprint (local names) and Anacapa Passage. Data collection began in 1995. Reefs are located at depths between 30 and 360 m (100 and 1,180 feet). Sampling was by the manned submersibles Delta and DualDeepworker and an unmanned Remotely Operated Vehicle (ROV). These sites included a wide range of such habitats as banks, ridges, and carbonate reefs, ranging in size from a few kilometers in length to less than a hectare in area. On these features, we focused on hard bottom macrohabitats, including kelp beds, boulder and cobble fields, and bedrock outcrops. Transects were not deliberately revisited; some reefs were surveyed as many as four times per year. All transects are 2 m wide; transect length varied (see data).

The dataset includes two tables: (1) the fish counts at Piggy Bank, Footprint, and Anacapa Passage; and (2), the habitat associated with each of the survey segments. Fishes were identified to lowest possible taxon (usually species), and verified against the WoRMs database (http://www.marinespecies.org/).

Nearshore fish surveys were performed in Harrison Bay during 2018. Harrison Bay is a shallow, estuarine environment located along the Beaufort Sea coastline that includes the Colville River delta and outlets to several smaller rivers and creeks. In recent years, studies of nearshore and offshore fish assemblages have been conducted and it is clear that these water provide important foraging habitat, proximity to shelter and overwintering habitat for all life stages of fish present in the region. The primary objectives of this effort were to survey fish communities using multiple survey methods, measure ambient water characteristics (temperature and salinity) and mark individual adult/sub-adult anadromous fish.