Scientific Name
Bostockia porosa

Common Name
Nightfish

Biology
Occur in coastal streams, lakes and ponds. Inhabit clear or darkly tannin-stained water of rivers, streams, swamps and lakes, usually near the cover of rocks, aquatic plants or woody debris (Ref. 44894). Cryptic during the day under stones or among vegetation, but actively feeding at night on various crustaceans, small fishes, aquatic insects and gastropods (Ref. 44894). Migrate to spawn in small side creeks after winter rains (August and September) (Ref. 6994). Males reach maturity after their first year, female after their second (Ref. 6994). Maximum life span is about six years (Ref. 44894).

Classification

Classified By

Castelnau, 1873

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Temperate perches (Percichthyidae)

Distribution

Region

Oceania

Distribution

Oceania: between Albany district and Moore River in Australia.

Range

30°S - 35°S, 115°W -

Environment

Climate

Temperate

Water Temperature From

10 °C

Water Temperature To

25 °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

demersal

Environment

Freshwater; demersal; potamodromous (Ref. 6994)

Trophic Level

3.25 s.e. 0.45 Based on food items.

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

15.0 cm

Common Length

9.0 cm

Phylogenetic Diversity Index

PD50 = 1.0000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Unknown

Vulnerability

Low vulnerability (21 of 100)

Resilience

Medium, minimum population doubling time 1.4 - 4.4 years (tmax=6; tm=1; K=0.67; Fec=230)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated