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FishintermediateFreshwater

Mahachai Betta

Betta mahachaiensis

Family: Osphronemidae

Ask Finn

Betta mahachaiensis is a wild betta discovered in 2012 in the brackish coastal habitats of Samut Sakhon, Thailand — making it unique among bettas in its tolerance for slightly saline conditions. Males display striking iridescent teal-blue scale edging similar to B. smaragdina. It builds bubble nests and is less aggressive than B. splendens toward other species. Its restricted wild range makes it important for conservation-minded hobbyists.

Keeping this species

diet
Carnivore – betta pellets, live/frozen small invertebrates
notes
Tolerates low-level brackish conditions (SG 1.002–1.005)
lifespan
3–5 years
max size
6.5 cm (2.6 in)
tank size
10 gallons minimum
temperament
Moderately aggressive toward male conspecifics

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Water it likes

ph
6.5–8.0
ammonia
0 ppm
nitrate
<20 ppm
hardness
5–20 dGH
temperature
75–86°F (24–30°C)

Stats

Community tips0
Kept by0 hobbyists