Deepwater cisco (Coregonus johannae) fish species and information / pictures of Deepwater cisco - Coregonus johannae

Deepwater cisco (Coregonus johannae) fish species information

Scientific Name
Coregonus johannae

Common Name
Deepwater cisco

Biology
Dorsal spines (total): 0; Dorsal soft rays (total): 9-11; Anal spines: 0; Anal soft rays: 10 - 16. Body elongate, moderately compressed laterally. Head relatively long, snout narrow, elongate; mouth terminal, lower jaw usually equal to upper jaw but may be longer or shorter. Overall coloration silvery with pink iridescence. Pale blue or green on back, becoming blue-green on the sides. Ventral surface silvery white. Pigmentation on premaxillae and on top of the head. Fins mainly clear or white, translucent, with lightly scattered pigmentation, pelvic fins immaculate.

Classification

Classified By
Wagner, 1910
Class
Ray-finned fishes (Actinopterygii)
Order
Salmons (Salmoniformes)
Family
Salmonids (Salmonidae)

Distribution

Region
North America
Distribution
North America: this species was indigenous to the Great Lakes basin, occurred in the deeper portions of lakes Huron and Michigan (Ref. 1998).
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
3.29 s.e. 0.44 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
26.5 cm
Common Length
27.5 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 vulnerability (38 of 100)
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.)
Threat To Humans
  Harmless
IUCN Red List Status
  Extinct (EX)