Freshwater

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• Housatonic River

  Information about fishing the Housatonic River

• 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.

• 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.

• 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.