Nocturnal pearlfish (Echiodon exsilium) fish species and information / pictures of Nocturnal pearlfish - Echiodon exsilium

Nocturnal pearlfish (Echiodon exsilium) fish species information

Scientific Name
Echiodon exsilium

Common Name
Nocturnal pearlfish

Biology
Dorsal spines (total): 0; Dorsal soft rays (total): 38-42; Anal spines: 0; Anal soft rays: 47 - 50; Vertebrae: 130. Eel-like, shallow body depth; 1 to several symphyseal fangs on dentary and premaxilla; lacking cardiform teeth, pelvic fins, and swim bladder rocker bone; a patch of ridges posteriorly on the ventral surface of the swim bladder (Ref. 34024). Precaudal vertebrae 21-25 (Ref. 34024). Branchiostegal rays: 7 (Ref. 36487).

Classification

Classified By

Rosenblatt, 1961

Class

Ray-finned fishes (Actinopterygii)

Order

Cusk eels (Ophidiiformes)

Family

Pearlfishes (Carapidae)

Distribution

Region

Eastern Pacific

Distribution

Eastern Pacific: Baja California Sur, Mexico to Panama (Ref. 36487), including the Gulf of California and the Galapagos Islands.

Range

Unknown

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

64 m

Depth To - meters

75 m

Zone

demersal

Environment

Marine; demersal; depth range 64 - 75 m (Ref. 36487)

Trophic Level

3.6 s.e. 0.61 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

12.6 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5002 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

Least Concern (LC)