Scientific Name
Hypseleotris ejuncida

Common Name
Slender gudgeon

Biology
Inhabits rocky pools, mostly in crevices along the shallow margins. Sexual dimorphism: F of smaller size and light colors with dorsal fins well separated; M larger size, prolonged posterior and anal ray, rounded caudal fin, posterior membrane of first dorsal fin reaches almost to the second. Reproduction: direct pairing with demersal, adhesive eggs laid on bottom after male has selected spawning site, male guards eggs until hatching (Ref. 2906, 44894). Breeding habits are probably similar to those of H. compressa (Ref. 44894).

Classification

Classified By

Hoese & Allen, 1982

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Sleepers (Eleotridae)

Distribution

Region

Oceania

Distribution

Oceania: known only from the Kimberley region of northern Western Australia (specimens collected from the Prince Regent River drainage, 260 km north of Derby).

Range

15°S - 16°S

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

demersal

Environment

Freshwater; demersal; non-migratory

Trophic Level

3.24 s.e. 0.40 Based on size and trophs of closest relatives

Occurs in Marine / Salt water

False

Occurs in Brackish water

False

Occurs in Fresh Water

True

Occurs on Reefs

False

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

6.0 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

Fisheries: of no interest

Vulnerability

Low vulnerability (12 of 100)

Resilience

High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)

Threat To Humans

Harmless

IUCN Red List Status

Lower Risk: near threatened (LR/nt)