Scientific Name
Gobiomorphus coxii

Common Name
Cox's gudgeon

Biology
Populations appear more abundant in southern rivers, in flowing areas, including rapids (Ref. 2906, 44894). Adults are not found in lower reaches but individuals range upstream into areas of altitudes up to 700 m (Ref. 2906). Rarely found near to the sea (Ref. 44894). Individuals have been observed climbing dam walls using their pectorals, out of direct water flow (Ref. 2906). Adults feed on aquatic insects and mosquitofish. Juveniles generally found closer to the sea. During upstream migration these fish are capable of climbing waterfalls and steep dams. The female lays eggs on rocky surfaces and the male guards and fans the nest until hatching several days later (Ref. 44894).

Classification

Classified By

Krefft, 1864

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Sleepers (Eleotridae)

Distribution

Region

Oceania

Distribution

Oceania: restricted to the southeast coast of Australia.

Range

Unknown

Environment

Climate

High altitude

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; potamodromous (Ref. 51243)

Trophic Level

3.19 s.e. 0.41 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

19.0 cm

Common Length

15.0 cm

Phylogenetic Diversity Index

PD50 = 0.5039 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Unknown

Vulnerability

Low to moderate vulnerability (26 of 100)

Resilience

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

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated