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Learn about goldfish in Connecticut, an introduced species that is native to Asia and common in urban ponds.
Hearing Officer Reports Hearing Officer Reports are not final decisions of the Office of Adjudications. The reports summarize an Informational Public Hearing that was held on an application. For additional information on the matters listed below, the public is encouraged to contact the Applicant or DEEP staff identified in the Report.
United States Army Corps of Engineers, State-wide
Notice of tentative determination for applications submitted by the United States Army Corps of Engineers to reissue and modify 56 of its 57 Nationwide Permits (NWPs). This activity will affect inland and coastal water resources of the State of Connecticut. Written comments due by November 12, 2025.
They were first observed in Connecticut in the early 1980s at a few disjunct sites in the lower Housatonic and upper Quinebaug River drainages. Populations are expanding in both of these drainages, and individuals have recently been discovered in the Connecticut River drainage as well.
The white sucker is arguably our most important fish species.
Learn about freshwater eels, Connecticut's only catadromous fish!
View a live big brown bat colony at White Memorial Conservation Center through a Bat Cam.
Watch the livestream of the Bats Count! Bat Cam at White Memorial Conservation Center.
Notice of tentative determination to approve and application submitted by Reworld Bristol, Inc. for renewal of a Title V Operating permit. Written comments due by November 27, 2025.
Fish Descriptions and Distribution Maps Explained
Learn how to interpret the fish descriptions and distribution maps used to describe the freshwater fishes of Connecticut!
True to their names, sticklebacks have very sharp spines, which can be locked in an upright position, causing these little fish to be very unpalatable for most predators.
A popular baitfish, fathead minnows can be found at low abundance almost anywhere in Connecticut.
Adorned with an armament of long, sharp spines, white perch are difficult for both anglers and predators to handle.
Prefer backwaters and slow-moving areas of larger rivers and streams as well as lakes and ponds. They appear to be more tolerant of brackish water than channel catfish.