CARES Species Profile:  Betta macrostoma

Photo by:  Henry Yu

Description

Betta native to Borneo. Found in shallow near-stagnant pools and also in fast-flowing waterfalls and quiet tributary pools. It is a paternal mouthbrooder and the male incubates from 12 to 35 days with 21 days being very consistent. It is very tolerant of water chemistry and thrives in almost any type of water however for spawning the water needs to be soft and acidic. Pairs can be housed in a 20 gallon tank, while groups should be housed in a 55 gallon tank or larger. Pairs should be given cover such as caves and plants.

CARES Family:   Osphronemidae - Bettas

Global Region:   Asia

Distribution:   Indonesia, Malaysia

CARES Classification:  Vulnerable CARES Assessment Date:  April 4, 2026    
IUCN Red List:  Vulnerable   IUCN Assessment Date:  Dec. 28, 2018      
 

CARES Registration

Click the Register This Species button if you keep this species and have not yet registered it with CARES.
You will need to provide information about where you acquired your fish and a photo to verify the species.

 Register This Species 

AquaristSpecies.net Community

Aquarists keeping and breeding Betta macrostoma are encouraged to share their experiences and availability of offspring they raise with fellow hobbyists. If you haven't already, please consider creating an AquaristSpecies.net account and clicking 'I keep this species' on the matching species page.

There are currently 2 community members keeping this species.

AquaristSpecies.net - Betta macrostoma

Species Feedback

Please use the Species Feedback button to provide helpful comments or corrections. Only admins will see your submission.

Note: If you have a good photo you would like to submit for consideration as the Species Profile photo you can upload it.

 Submit Species Feedback