Freshwater Fishes of Connecticut

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  • Rainbow Smelt

    Smelt are important forage fish for large pelagic predators such as striped bass in estuaries and brown trout in lakes.

  • Inland Silverside

    Also known as “tidewater” silverside. They are less common than and very difficult to distinguish from the Atlantic silverside without magnification.

  • Slimy Sculpin

    Sculpins are sensitive to environmental degradation, requiring good-quality, coldwater streams to survive.

  • Green Sunfish

    Introductions of green sunfish have been implicated with adverse impacts on other fish species.

  • Mullets

    Mullets are torpedo-shaped fishes with horizontal mouths.

  • Yellow Perch

    Yellow perch are one of the state’s most popular panfishes. They actively feed during the winter, making them a staple for ice anglers.

  • Golden Shiner

    Commonly sold as bait, the golden shiner is our most common lake and pond minnow species.

  • Atlantic Salmon

    Atlantic salmon were extirpated from the Connecticut River and, despite extensive restoration efforts, self-sustaining runs do not occur.

  • Blueback Herring

    Blueback herring and alewives are so similar that the color of the gut lining (peritoneum) is the only sure way to tell them apart.

  • Banded Sunfish

    The banded sunfish is listed as a Connecticut State Threatened Species. Their small size makes them vulnerable to predation by bass and other large gamefish, so they thrive only in protected, backwater areas.

  • Mimic Shiner

    Looking a lot like other shiners gave the mimic shiner its name.

  • Pike and Pickerel

    Two native and one introduced pike species exist in Connecticut. All members of the family are predacious, primarily feeding on fish.

  • White Sucker

    The white sucker is arguably our most important fish species.

  • Alewife

    Anadromous alewives are important forage fish for large gamefish such as striped bass and bluefish as well as many other animals, including osprey and marine mammals.

  • Yellow Bullhead

    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.