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.

  • Creek Chub

    Closely related to fallfish, creek chubs build long ridges of gravel for nests.

  • Blacknose Dace

    Blacknose dace are a native minnow that prefer the pools and rocky riffles of small headwater streams.

  • 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.

  • Sheepshead Minnow

    The sheepshead minnow is a standard for use in many laboratory toxicity and genetics studies.

  • Ninespine Stickleback

    Ninespine stickleback males build little tunnel-shaped nests out of bits of vegetation.

  • Mudminnows

    Mudminnows are a small family of the Northern Hemisphere that look similar to killifish and minnows, but are actually more closely related to pike.