Cairns rainbowfish (Cairnsichthys rhombosomoides) fish species and information / pictures of Cairns rainbowfish - Cairnsichthys rhombosomoides

Cairns rainbowfish (Cairnsichthys rhombosomoides) fish species information

Scientific Name
Cairnsichthys rhombosomoides

Common Name
Cairns rainbowfish

Biology
Occurs in small rainforest creeks usually in hilly terrain with alternating sections of rapids and rocky pools varying in depth from several centimeters to one to three meters. Bottom composed of boulders, cobbles and gravel with minimal plant growth. In spite of the limited distribution its future seems secure as long as the rainforest habitat of the Bellenden Ker Range is protected. Much of this area lies within a national park (Ref. 44894).

Classification

Classified By

Nichols & Raven, 1928

Class

Ray-finned fishes (Actinopterygii)

Order

Silversides (Atheriniformes)

Family

Rainbowfishes, blue eyes (Melanotaeniidae)

Distribution

Region

Oceania

Distribution

Oceania: endemic to Australia.

Range

Unknown

Environment

Climate

Tropical

Water Temperature From

21 °C

Water Temperature To

25 °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

demersal

Environment

Freshwater; ; pH range: 7.2 - 7.6; dH range: 10 - ? demersal

Trophic Level

2.89 s.e. 0.41 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

8.5 cm

Common Length

6.0 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 to moderate vulnerability (35 of 100)

Resilience

Medium, minimum population doubling time 1.4 - 4.4 years (Fec = 131)

Threat To Humans

Harmless

IUCN Red List Status

Vulnerable (VU) (A1ce, D2)