Fin's Fish Guide
The Blue betta (Betta smaragdina) is a freshwater fish of the family Osphronemidae that grows up to 7 cm.
Description
The emerald betta is a small labyrinth fish from fresh water of Thailand and Laos. The species grows to about 7 cm; males gleam emerald-green with rows of glittering scales on a dark body, while females are plainer. As a labyrinth fish it can gulp air at the surface with a special breathing organ and so survive oxygen-poor water. The male builds a bubble nest and guards the eggs. It feeds on small insects and invertebrates. The fish is popular in the aquarium hobby. The IUCN assesses the species as Least Concern (LC).
Frequently asked questions
How do you recognise the Blue betta?
The Blue betta has a torpedo-shaped body, is mainly green and shows a spots pattern. Labyrinth breathing and a bubble nest; emerald-green male
Where does the Blue betta live?
The Blue betta lives in fresh water and is mostly found around mixed bottom. Thailand and Laos
How big does the Blue betta get?
The Blue betta grows to a maximum of about 7 cm.
Is the Blue betta dangerous to humans?
No, the Blue betta 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.
Is the Blue betta edible?
The Blue betta is not usually eaten.
More photos
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Betta
More from the family Osphronemidae
Want the complete picture on the Blue betta?
Point your camera at the fish and Fin names the species in seconds. Free, and the Blue betta is one of 12,519 species in the app.