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Cairns rainbowfish (Cairnsichthys rhombosomoides) — Melanotaeniidae

Cairns rainbowfish

Cairnsichthys rhombosomoides

The Cairns rainbowfish (Cairnsichthys rhombosomoides) is a freshwater fish of the family Melanotaeniidae that grows up to 9 cm.

Length
8.5 cm
Water
Freshwater
Behaviour
Schooling
Activity
Diurnal
Body shape
Elongated (eel-like)
Substrate
Sand / mud bottom
Danger
Harmless

Description

The Cairns rainbowfish is a small rainbowfish (Melanotaeniidae) endemic to clear rainforest streams of northeastern Queensland in Australia. The species grows to about 9 cm and has a slender, silvery body with a yellowish tinge and fine stripes. As a schooling fish it swims in flowing, clear water and eats small insects, larvae and algae. The fish is harmless to humans.

Frequently asked questions

How do you recognise the Cairns rainbowfish?

The Cairns rainbowfish has an elongate, eel-like body and is mainly silver-grey.

Where does the Cairns rainbowfish live?

The Cairns rainbowfish lives in fresh water and is mostly found around sand or mud bottom.

How big does the Cairns rainbowfish get?

The Cairns rainbowfish grows to a maximum of about 9 cm. On average the species is around 6 cm.

Is the Cairns rainbowfish dangerous to humans?

No, the Cairns rainbowfish is harmless to humans.

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All data

Identification

Dutch name
Cairns-regenboogvis sourced
English name
Cairns rainbowfish sourced
Scientific name
Cairnsichthys rhombosomoides
Family
Melanotaeniidae
Other names
Cairns Rainbowfish; Northern soft-spined sunfish verified

Appearance

Size class
Small verified
Max length (cm)
8.5 verified
Average length (cm)
6.0 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Silver / grey sourced
Tail shape
Forked inferred

Habitat & distribution

Water type
Freshwater sourced
Substrate
Sand / mud bottom sourced
Origin
Native inferred

Behaviour & biology

Social behaviour
Schooling sourced
Territorial
No inferred
Activity
Diurnal inferred
Reproduction
Separate sexes inferred
Sexual dimorphism
Yes inferred

For anglers

Fishing method
Klein van stuk en nauwelijks een hengelsportdoel; wordt vooral incidenteel of als aasvis gevangen. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless verified

Status & sources

Sources
FishBase via GBIF (DwC-A), CC-BY-NC 4.0

More from the family Melanotaeniidae

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