Betta mahachaiensis

The brown-black body flashes green or blue-green, with two parallel blue-green vertical bars on each gill cover. Dark fin rays contrast with iridescent membranes; there is no red crescent at the tail edge.

Adult length: Up to 6 cm (standard length, without the tail fin)
Water temperature: 22–28 °C
pH: 7–8.5
Hardness: 5–20 dGH

Found in coastal brackish water in the wild. Husbandry sources allow moderately hard to hard freshwater or mildly brackish water; do not apply a soft, acidic blackwater setup.

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Social behaviour and territory

A 45 × 30 cm footprint is a reference for one pair. Multiple males require ample cover and visual barriers.

Diet and feeding

Try suitably sized dried foods, rotating with live or frozen foods such as Daphnia and Artemia. Feed small amounts and avoid overfeeding.

Sources