Connecticut Department of Energy & Environmental Protection

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

Page 7 of 9

  • 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.

  • Striped Mullet

    Striped mullet support important commercial fisheries in Southern states. Smaller fish are sold as bait.

  • Sticklebacks

    Four native stickleback species are found predominantly in marine and sometimes fresh waters of Connecticut. The males build and guard nests made out of aquatic vegetation, and they become darker and/or more brightly colored during the spawning season.

  • Table of Contents

    This pictorial guide contains interesting and useful information about all of Connecticut's fascinating freshwater fishes.

  • Freshwater Eels

    Learn about freshwater eels, Connecticut's only catadromous fish!

  • Lampreys

    Learn more about this primitive family of fishes that have a sucking disc in place of a jaw.

  • Sunfishes and Freshwater Basses

    There are eleven sunfish species in Connecticut, only three of which are native.

  • Fish Descriptions and Distribution Maps Explained

    Learn how to interpret the fish descriptions and distribution maps used to describe the freshwater fishes of Connecticut!

  • Rainwater Killifish

    Where numerous, rainwater killifish are thought to be an effective control of mosquito larvae.

  • Mummichog

    They are sold as bait at coastal bait shops (where they are often called “killies” or “mummies”) and are popular due to their toughness and ability to survive in fresh water.

  • Goldfish

    Learn about goldfish in Connecticut, an introduced species that is native to Asia and common in urban ponds.

  • Shortnose Sturgeon

    Learn about the shortnose sturgeon, a state and federally endangered species that call the CT River home.

  • Grass Carp

    Native to China and Siberia, this gigantic freshwater fish has been widely stocked for weed control.

  • Fourspine Stickleback

    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.

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