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.

• Pupfishes

  The pupfishes and killifishes are very similar and were once included in the same family.

• Banded Killifish

  Prefer shallow, still areas of lakes and ponds and slow-flow areas of larger rivers and streams.

• Longnose Sucker

  Recent attempts to find longnose suckers in Connecticut have failed.

• Silversides

  Two estuarine/marine species of silversides exist in Connecticut. Both are schooling fish that occasionally enter freshwater areas of coastal rivers and streams.

• Fathead Minnow

  A popular baitfish, fathead minnows can be found at low abundance almost anywhere in Connecticut.

• Fallfish

  Our largest minnow species, the fallfish, is misidentified by many as trout or "dace".

• Home Aquariums

  Make a home aquarium with the beautiful native and introduced freshwater fishes of Connecticut!

• Central Mudminnow

  Although central mudminnows look superficially like minnows or killifish, they are actually more closely related to pickerel and pike.

• Atlantic Silverside

  Their abundance makes them very important forage fish for many marine predators such as striped bass, fluke and seabirds.

• Families of Connecticut Freshwater Fishes

  Learn the defining characteristics of Connecticut's freshwater fish families!