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)