Fin's Fish Guide
The Slender rainbowfish (Melanotaenia gracilis) is a freshwater fish of the family Melanotaeniidae that grows up to 8 cm.
Description
The Slender rainbowfish is a rainbowfish (Melanotaeniidae) from clear streams, lakes and swamps of northern Australia. The species grows to about 10 cm and has a deep, laterally compressed body; dominant males colour up spectacularly with blue, yellow, red or green tints that glow in the morning light. As a social schooling fish it swims in the upper and middle layer and snaps at insects, larvae, small invertebrates and algae. The fish is harmless to humans.
Frequently asked questions
How do you recognise the Slender rainbowfish?
The Slender rainbowfish has a torpedo-shaped body and is mainly multicoloured.
Where does the Slender rainbowfish live?
The Slender rainbowfish lives in fresh water and is mostly found around open water. Oceania: Australia
How big does the Slender rainbowfish get?
The Slender rainbowfish grows to a maximum of about 8 cm.
Is the Slender rainbowfish dangerous to humans?
No, the Slender rainbowfish is harmless to humans. This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status.
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Melanotaenia
More from the family Melanotaeniidae
Want the complete picture on the Slender rainbowfish?
Point your camera at the fish and Fin names the species in seconds. Free, and the Slender rainbowfish is one of 12,519 species in the app.