High cockscomb (Anoplarchus purpurescens) fish species and information / pictures of High cockscomb - Anoplarchus purpurescens

High cockscomb (Anoplarchus purpurescens) fish species information

Scientific Name
Anoplarchus purpurescens

Common Name
High cockscomb

Biology
Dorsal spines (total): 55 - 58; Dorsal soft rays (total): 0; Anal spines: 0; Anal soft rays: 39 - 40; Vertebrae: 58 - 61. Caudal with convex outer margin (Ref. 6885). Color very variable- may be light to dark gray with olivaceous overtones, brown to dark brown with or without reddish overtones, or purple to almost black. Females are less varied in color, but show more pattern, usually having green grayish backgrounds with brownish reticulations, or dark brownish backgrounds with subdued reticulation. Belly pale. In the males, the cockscomb and under surface of head are pale, rather yellowish, and without speckling. In the female, the head is more speckled and mottled. There is a gray bar across the base of the caudal peduncle. At breeding season, the male develops bright orange colors on its anal and pectoral fins, and reddish on the caudal and dorsal fins (Ref. 6885).

Classification

Classified By
Gill, 1861
Class
Ray-finned fishes (Actinopterygii)
Order
Perch-like fish (Perciformes)
Family
Pricklebacks (Stichaeidae)

Distribution

Region
Eastern Pacific
Distribution
Eastern Pacific: Pribilof Islands, Alaska to Santa Rosa Island and Trinidad Bay, southern California, USA.
Range
66°N - 32°N

Environment

Climate
Temperate
Water Temperature From
Unknown °C
Water Temperature To
Unknown °C
Depth From - meters
1 m
Depth To - meters
30 m
Zone
demersal
Environment
Marine; demersal; depth range 1 - 30 m (Ref. 2850)
Trophic Level
2.84 s.e. 0.31 Based on diet studies.
Occurs in Marine / Salt water
True
Occurs in Brackish water
False
Occurs in Fresh Water
False
Occurs on Reefs
False
Is kept in Aquariums
False

Physical Size and Genetics

Maximum Length
20.0 cm
Common Length
Unknown cm
Phylogenetic Diversity Index
PD50 = 0.7500 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses
Unknown
Vulnerability
Low to moderate vulnerability (29 of 100)
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (tm=2-3; Fec=2,700)
Threat To Humans
  Harmless
IUCN Red List Status
  Not Evaluated