Longjaw cisco (Coregonus alpenae) fish species and information / pictures of Longjaw cisco - Coregonus alpenae

Longjaw cisco (Coregonus alpenae) fish species information

Scientific Name
Coregonus alpenae

Common Name
Longjaw cisco

Biology
Dorsal spines (total): 0; Dorsal soft rays (total): 10-13; Anal spines: 0; Anal soft rays: 10 - 14; Vertebrae: 56 - 59. Body elongate, compressed laterally but robust. Head heavy, broad and short; eye moderate; snout broad, somewhat rounded; lower jaw heavy, usually projecting beyond the upper jaw, maxillary usually not pigmented, extending posteriorly to beyond the anterior margin of the eye. Overall coloration silvery with pink or purple iridescence, green or blue on back, silvery on sides and white below. Pigmentation on jaws and fins very light.

Classification

Classified By
Koelz, 1924
Class
Ray-finned fishes (Actinopterygii)
Order
Salmons (Salmoniformes)
Family
Salmonids (Salmonidae)

Distribution

Region
North America
Distribution
North America: Great Lakes basin in lakes Huron and Michigan. Listed as Extinct in IUCN Red List 2004 and listed in Appendix I of CITES.
Range
Unknown

Environment

Climate
Temperate
Water Temperature From
Unknown °C
Water Temperature To
Unknown °C
Depth From - meters
Unknown m
Depth To - meters
Unknown m
Zone
demersal
Environment
Freshwater; demersal
Trophic Level
3.33 s.e. 0.45 Based on size and trophs of closest relatives
Occurs in Marine / Salt water
False
Occurs in Brackish water
False
Occurs in Fresh Water
True
Occurs on Reefs
False
Is kept in Aquariums
False

Physical Size and Genetics

Maximum Length
45.6 cm
Common Length
26.7 cm
Phylogenetic Diversity Index
PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses
Unknown
Vulnerability
Moderate to high vulnerability (45 of 100)
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (K=0.13-0.24)
Threat To Humans
  Harmless
IUCN Red List Status
  Extinct (EX)