Pacific pearlfish (Carapus dubius) fish species and information / pictures of Pacific pearlfish - Carapus dubius

Pacific pearlfish (Carapus dubius) fish species information

Scientific Name
Carapus dubius

Common Name
Pacific pearlfish

Biology
Dorsal spines (total): 0; Dorsal soft rays (total): 142-148; Anal spines: 0; Anal soft rays: 153 - 160; Vertebrae: 113 - 118. Eel-like, moderate to shallow body depth; maxilla free and movable; cardiform teeth present; branchiostegal membranes partly or completely united; swim bladder with thin terminal membrane or bulb; lacking enlarged dentary or premaxillary fangs, dentary diastema, pelvic fins, and swim bladder rocker bone (Ref. 34024). 19-20 precaudal vertebrae (Ref. 38407). Branchiostegal rays: 6-7 (Ref. 36487).

Classification

Classified By

Putnam, 1874

Class

Ray-finned fishes (Actinopterygii)

Order

Cusk eels (Ophidiiformes)

Family

Pearlfishes (Carapidae)

Distribution

Region

Eastern Pacific

Distribution

Eastern Pacific: Hawaii (Ref. 6347) and from Baja California, Mexico to Colombia. Record from the Antilles by Ref. 26340 is not supported by Ref. 34024.

Range

32°N - 1°N, 27°E - 77°W

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

2 m

Depth To - meters

79 m

Zone

demersal

Environment

Marine; demersal; depth range 2 - 79 m (Ref. 58302)

Trophic Level

3.65 s.e. 0.62 Based on size and trophs of closest relatives

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

15.0 cm

Common Length

12.0 cm

Phylogenetic Diversity Index

PD50 = 0.5156 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries: of no interest

Vulnerability

Low vulnerability (10 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

Data deficient (DD)