Bowfin are also an ancient family of fishes and are represented by only one living species found in North America rivers. This heavy bodied, widely distributed predatory fish has a long dorsal fin reaching nearly the length of the body. Bowfin have a lunglike gas bladder, can breath air similar to gar, and can survive in low oxygen environments. Maximum size is about 20 pounds. They are frequently caught by fishermen and sold in restaurants as dogfish or grindle. Males (with a tail spot) dig gravel nests where they guard the eggs and larvae. Bowfin are effective predators on fish and crayfish.
Physical Description:
- Elongate, stout-bodied, cylindrical fish
- Long dorsal fin and bony plate on the underside of the lower jaw
- Mouth subterminal with jaws bearing peg-like teeth
- Cycloid scales
- Body fully scaled
- Dark spots on the caudal fin of males
Similar species:
- None
Mean body size:
- Adults are 400-600 mm standard length.
Habitat:
- Dark swamps, sluggish rivers, streams, ditches, ponds, lakes, and estuaries
- Usually found in shallow, weedy areas, near cut banks or stumps
- During times of drought, bowfin can aestivate (burrow in the mud) and breathe air
Distribution in VA:
- Native to Atlantic slope drainages
- Introduced to New and upper Roanoke drainages
Food Habits:
- Young feed on microcrustaceans and insects
- Adults feed on fish, worms, crayfishes, insects, mollusks, and frogs
Reproductive Habits:
- Most spawn at age 4 or 5
- Spawn in the spring in water about 16-19°C
- Males construct bowl-shaped nests on bottom in shallows
- Spawning occurs at night and involves the pair nudging each other and circling the nest
- Males defend nest
- Nests contain 2,000-5,000 eggs covered with gelatinous filaments
- Fecundity is 2,765-64,000 eggs per female
Population Status, Economic, or Ecological Importance:
- One of two living fossils (primitive fish) that live in Virginia
- A gamefish, but not very edible
References:
Jenkins, R.E and N.M. Burkhead. 1993. Freshwater Fishes of Virginia. American Fisheries Society, Bethesda, Maryland.
If you are seeking more information for the above species click on the VAFWIS logo (The Virginia Fish and Wildlife Information Service):
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Continue Browsing Families.....
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Petromyzontidae, Lampreys
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Polyodontidae, Paddlefish
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Acipenseridae, Sturgeons
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Lepisosteidae, Gars
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Amiidae, Bowfins
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Anguillidae, Freshwater Eels
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Amblyopsidae, Cavefishes
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Ictaluridae, Catfish
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Percopsidae, Trout-Perches
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Salmonidae, Trouts
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Clupeidae, Herrings
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Esocidae, Pikes
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Aphredoderidae, Pirate Perches
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Umbridae, Mudminnows
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Fundulidae, Killifishes
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Poeciliidae, Livebearers
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Cyprinidae, Minnows
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Catostomidae, Suckers
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Gasterosteidae, Sticklebacks
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Atherinidae, Silversides
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Cottidae, Sculpins
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Sciaenidae, Drums
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Percidae, Perches
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Moronidae, Striped Basses
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Centrarchidae, Sunfishes
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