Pearl fish (Carapus acus) fish species and information / pictures of Pearl fish - Carapus acus

Pearl fish (Carapus acus) fish species information

Scientific Name
Carapus acus

Common Name
Pearl fish

Biology
Dorsal soft rays (total): 37-39. Eel-like, moderate to shallow body depth; cardiform teeth present but restricted to upper jaw symphysis; swim bladder constricted forming two chambers; lacking enlarged dentary or premaxillary fangs, dentary diastema, pelvic fins and swim bladder rockerbone (Ref. 34024). Possesses a free, movable maxilla (Ref. 6347).

Classification

Classified By

Br?nnich, 1768

Class

Ray-finned fishes (Actinopterygii)

Order

Cusk eels (Ophidiiformes)

Family

Pearlfishes (Carapidae)

Distribution

Region

Eastern Atlantic

Distribution

Eastern Atlantic: including the Mediterranean. Probably south to Ascension Island.

Range

42°N - 15°S

Environment

Climate

Subtropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

1 m

Depth To - meters

150 m

Zone

demersal

Environment

Marine; demersal; non-migratory; depth range 1 - 150 m (Ref. 34024)

Trophic Level

4.04 s.e. 0.63 Based on food items.

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

20.8 cm

Common Length

Unknown 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 (11 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

Not Evaluated