Island major (Stegastes arcifrons) fish species and information / pictures of Island major - Stegastes arcifrons

Island major (Stegastes arcifrons) fish species information

Scientific Name
Stegastes arcifrons

Common Name
Island major

Biology
Dorsal spines (total): 12; Dorsal soft rays (total): 15-16; Anal spines: 2; Anal soft rays: 12 - 13. Exhibits geographic color variations.

Classification

Classified By
Heller & Snodgrass, 1903
Class
Ray-finned fishes (Actinopterygii)
Order
Perch-like fish (Perciformes)
Family
Damselfishes (Pomacentridae)

Distribution

Region
Eastern Pacific
Distribution
Eastern Pacific: Costa Rica and from Cocos, Malpelo and Galapagos islands (Ref. 9334).
Range
9°N - 2°S, 92°W - 77°W

Environment

Climate
Tropical
Water Temperature From
Unknown °C
Water Temperature To
Unknown °C
Depth From - meters
1 m
Depth To - meters
20 m
Zone
reef-associated
Environment
Marine; reef-associated; non-migratory; depth range 1 - 20 m (Ref. 9334)
Trophic Level
2.97 s.e. 0.39 Based on food items.
Occurs in Marine / Salt water
True
Occurs in Brackish water
False
Occurs in Fresh Water
False
Occurs on Reefs
True
Is kept in Aquariums
False

Physical Size and Genetics

Maximum Length
13.0 cm
Common Length
Unknown 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
Low to moderate vulnerability (29 of 100)
Resilience
Low, minimum population doubling time 4.5 - 14 years (tmax=27)
Threat To Humans
  Harmless
IUCN Red List Status
  Least Concern (LC)