DEEP headquarters at 79 Elm Street in Hartford has partially re-opened to staff and members of the public as of Tuesday, February 3. The DEEP records room has re-opened. The DEEP Central Permit Processing Unit (CPPU) will be open to the public starting on Wednesday, Feb. 4. For updates, click here

Freshwater

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  • 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.

  • White Perch

    Adorned with an armament of long, sharp spines, white perch are difficult for both anglers and predators to handle.

  • Walleye

    Although relatively feeble fighters on rod and reel, walleye are an esteemed game and food fish throughout their range.

  • Striped Bass

    Striped bass grow large and are arguably the most important inshore predator and sport fish in the state.

  • Killifishes

    Both marine and freshwater killifishes are distributed throughout Central and Eastern North America from southern Canada to the Yucatan, including Cuba and Bermuda.

  • Bridle Shiner

    This easily overlooked minnow, the bridle shiner, is apparently declining throughout much of its range.

  • Common Carp

    Learn all about common carp, one of Connecticut's biggest and hardest fighting fish!

  • Tench

    An esteemed food and sport fish in Europe, it's unclear how the tench will affect Connecticut's freshwater ecosystems.

  • Cutlip Minnow

    Cutlip minnows are known to sometimes knock out and eat the eyes of other fishes.

  • Minnows and Carps

    Minnows are an extremely diverse family with abundant representatives over most of the world. Learn about all the minnows who call Connecticut home!

  • Warmouth

    Warmouths can be distinguished from other sunfishes by feeling for the patch of small teeth on the tongue.

  • Hogchoker

    Apparently during Colonial times, “hogchokers” fed to pigs proved difficult to swallow.