Osphronemidaefreshwater fishintermediate

Mouth-brooding Betta (Betta pugnax)

Betta pugnax

Origin: Malaysia, Singapore

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Water Parameters

Temperature2327 °C
15 °C35 °C
pH5.57
49
GH (Hardness)210 °dGH
0 °dGH30 °dGH
KH (Alkalinity)15 °dKH
0 °dKH20 °dKH

Quick Stats

Max Size
9 cm
Min Tank
60 L
Lifespan
3-5
Swimming Level
mid
Schooling
No
Diet
Carnivore; live and frozen bloodworm, daphnia, artemia
Temperament
Semi-aggressive; males territorial with other bettas but generally peaceful with other species

About

Betta pugnax is a paternal mouth-brooding wild betta from clear, flowing rainforest streams in Peninsular Malaysia and Singapore, where it inhabits rocky and sandy substrates with moderate current. Unlike bubble-nesting bettas, the male incubates eggs and developing fry within his buccal cavity for 2–3 weeks. Its subtle brown and green patterning is accented by iridescent blue scale edges that shimmer in natural lighting. A rewarding species for intermediate aquarists seeking to observe natural wild-type betta behavior.

Care Guide

Provide a mature, well-planted aquarium with gentle to moderate flow and hiding places among rocks and driftwood. Maintain soft to moderately hard, slightly acidic water. Feed live and frozen invertebrates: bloodworms, daphnia, and artemia. The male should not be disturbed during mouthbrooding.

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