Rock wrasse (Halichoeres semicinctus) fish species and information / pictures of Rock wrasse - Halichoeres semicinctus

Rock wrasse (Halichoeres semicinctus) fish species information

Scientific Name
Halichoeres semicinctus

Common Name
Rock wrasse

Biology
Found close to rocks near patches of sand and in tide pools. Dart into sand when disturbed and sleep at night buried in sand with head protruding. Feed on gastropods, small crustaceans and has been observed to pick ectoparasites from other fishes (Ref. 9311). Each individual functions first as female but changes to a male at length of about 30 cm. Pelagic spawners (Ref. 56049).

Classification

Classified By
Ayres, 1859
Class
Ray-finned fishes (Actinopterygii)
Order
Perch-like fish (Perciformes)
Family
Wrasses (Labridae)

Distribution

Region
Eastern Pacific
Distribution
Eastern Pacific: Point Conception in California, USA to Guadalupe Island (off north-central Baja California) and the Gulf of California in Mexico.
Range
34°N - 23°N

Environment

Climate
Subtropical
Water Temperature From
Unknown °C
Water Temperature To
Unknown °C
Depth From - meters
Unknown m
Depth To - meters
24 m
Zone
reef-associated
Environment
Marine; reef-associated; depth range ? - 24 m (Ref. 2850)
Trophic Level
3.26 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
True

Physical Size and Genetics

Maximum Length
38.0 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
Aquarium: commercial
Vulnerability
Low to moderate vulnerability (32 of 100)
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (tm=2; tmax=14)
Threat To Humans
  Harmless
IUCN Red List Status
  Least Concern (LC)