Fin's Fish Guide
The Geay's rivulus (Laimosemion geayi) is a freshwater fish of the family Rivulidae that grows up to 5 cm.
Description
Geay's rivulus is a small killifish of the family Rivulidae from the Guianas in South America. The species grows to about 5 cm and has an elongate body with a flattened back; males are more handsomely coloured with spots and mottled fins. It is a calm, timid little species, typical of forest rivers where the current is slight, often in shallow, dark-stained water among leaf litter and roots. As a surface and bottom hunter it feeds on small invertebrates, insect larvae and small zooplankton. Rivulus-type fishes can move out of water for short periods among moist leaves. Owing to its small size the species is harmless to humans.
Frequently asked questions
How do you recognise the Geay's rivulus?
The Geay's rivulus has an elongate, eel-like body, is mainly brown and shows a spots pattern. Shy little forest-river killifish; can move out of the water among damp leaves for a short time.
Where does the Geay's rivulus live?
The Geay's rivulus lives in fresh water and is mostly found around mixed bottom. South America; calm forest rivers with little current in the Guianas.
How big does the Geay's rivulus get?
The Geay's rivulus grows to a maximum of about 5 cm. On average the species is around 4 cm.
Is the Geay's rivulus dangerous to humans?
No, the Geay's rivulus is harmless to humans. None required: this species is harmless to humans.
Is the Geay's rivulus edible?
The Geay's rivulus is not usually eaten.
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Laimosemion
More from the family Rivulidae
Want the complete picture on the Geay's rivulus?
Point your camera at the fish and Fin names the species in seconds. Free, and the Geay's rivulus is one of 12,519 species in the app.