The Moon tetra (Hemigrammus lunatus) is a freshwater fish of the family Characidae that grows up to 5 cm.
South America: Bolivia, Brazil, Colombia, Ecuador, Paraguay, Peru and others
Description
The Moon tetra is a small characin (Characidae) from fresh water of the Amazon and Paraguay basins in South America. The species grows to about 5 cm and has a slender, partly translucent body. A moon-shaped dark spot stands out at the tail base. As a schooling fish it swims in clear streams and rivers and eats small insects, larvae and plant material. The fish is harmless to humans and is popular in the aquarium trade.
Frequently asked questions
How do you recognise the Moon tetra?
The Moon tetra has a torpedo-shaped body and is mainly silver-grey.
Where does the Moon tetra live?
The Moon tetra lives in fresh water and is mostly found around mixed bottom. South America: Bolivia, Brazil, Colombia, Ecuador, Paraguay, Peru and others
How big does the Moon tetra get?
The Moon tetra grows to a maximum of about 5 cm.
Is the Moon tetra dangerous to humans?
No, the Moon tetra 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 Hemigrammus
More from the family Characidae

Want the complete picture on the Moon tetra?
Point your camera at the fish and Fin names the species in seconds. Free, and the Moon tetra is one of 12,519 species in the app.