DEEP Fish Community Data – Inland Waters

Connecticut DEEP and UConn CLEAR have collaborated on a project to make Connecticut's freshwater fish community data (historical and current) available to the public. The Fish Community Data Application allows users to search DEEP fish community data for inland waters by town, subregional basin, county, waterbody, or fish species.

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The DEEP Fish Community Application showcases fish community data for Connecticut's inland waters. Information is provided below about what is included and how this data is collected.
Disclaimer: Please be aware of the sample year. Biological condition can change over time and some of the data may or may not be representative of current conditions.

Fish Community

Fish community data are routinely collected by CT DEEP in rivers/streams and lakes/ponds for a variety of reasons. Most of the data presented here were collected using electrofishing equipment, an efficient non-lethal method to collect fish. Immediately after being collected, each fish is identified, measured and released. In lakes and ponds, a scale sample may be collected to help determine age and growth rate.

Appropriate Use: Data represent the number of each species counted during whole community census or “all species” samples or indicate presence. Please note, these numbers may not be directly comparable from one sample or location to another as sampling effort may vary. Questions about the data should be directed to deep.inland.fisheries@ct.gov or 860-424-FISH.


photo: CT DEEP