Freshwater Fishes of Connecticut

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• Knobfin Sculpin

  A newly discovered invasive species, the knobfin sculpin has had a devastating impact on the Pomperaug River ecosystem.

• Western Mosquitofish

  Western Mosquitofish have been widely introduced across the globe as a biocontrol with mixed results.

• Eastern Mosquitofish

  The Eastern Mosquitofish has been widely introduced as a biocontrol with mixed results.

• Mosquitofishes

  An introduction to mosquitofishes in Connecticut.

• 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.

• Kokanee

  Kokanee prefer relatively clear lakes with cold, well-oxygenated water.

• Sculpins

  Sculpins have a flattened head, large frog-like mouth and eyes, a scaleless body, and large fan-shaped pectoral fins.

• American Soles

  A small family limited to marine waters of the Western Hemisphere.

• Brown Bullhead

  The brown bullhead is Connecticut’s most widely distributed and only native catfish species. They are good to eat, but are typically underutilized by anglers.

• Bluegill

  Bluegills often inhabit shallow areas and are very easy to catch on a variety of small lures or baits (especially worms).