Bowfin (Amia calva) fish species and information / pictures of Bowfin - Amia calva

Bowfin (Amia calva) fish species information

Scientific Name
Amia calva

Common Name
Bowfin

Biology
Found in swampy, vegetated lakes and rivers. Air-breather that can withstand high temperatures, which enables it to survive in stagnant areas; even known to aestivate; lethal temperature is 35.2?C. A voracious and opportunist feeder, it subsists on fishes including other sport fishes, frogs, crayfish, insects, and shrimps. It uses scent as much as sight and captures food by means of gulping water. Males are always smaller than females which live longer. Apparently somewhat migratory during spawning season. Eggs are adhesive, attached to decaying vegetation and upright weeds. Larvae are found in nest, remaining attached to roots or lying on bottom until adhesive organ is absorbed, thereafter in tight "swarm" guarded by male parent outside nest. A 'living fossil' and lone survivor species

Classification

Classified By
Linnaeus, 1766
Class
Ray-finned fishes (Actinopterygii)
Order
Bowfins (Amiiformes)
Family
Bowfins (Amiidae)

Distribution

Region
North America
Distribution
North America: St. Lawrence River, Lake Champlain drainage of Quebec and Vermont west across southern Ontario to the Mississippi drainage in Minnesota.
Range
47°N - 25°N

Environment

Climate
Temperate
Water Temperature From
15 °C
Water Temperature To
20 °C
Depth From - meters
Unknown m
Depth To - meters
Unknown m
Zone
demersal
Environment
Freshwater; demersal
Trophic Level
3.81 s.e. 0.67 Based on food items.
Occurs in Marine / Salt water
False
Occurs in Brackish water
False
Occurs in Fresh Water
True
Occurs on Reefs
False
Is kept in Aquariums
True

Physical Size and Genetics

Maximum Length
109 cm
Common Length
53.4 cm
Phylogenetic Diversity Index
PD50 = 2.0000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses
Fisheries: of no interest; gamefish: yes; aquarium: public aquariums
Vulnerability
Moderate vulnerability (40 of 100)
Resilience
Low, minimum population doubling time 4.5 - 14 years (K=0.14; tm=3-5; tmax=12; Fec=23,600)
Threat To Humans
Harmless
IUCN Red List Status
Not Evaluated