Hendra Betta

Hendra Betta (Betta hendra) is a recently described wild betta species — formally named in 2013 — from the peat swamp forests of southern Kalimantan (Borneo), Indonesia. Named for Hendra Haryono, an Indonesian ichthyologist who contributed significantly to betta taxonomy. Males display vivid blue to blue-green iridescent scaling on a dark body with blue fin edging — a striking color combination in a small, secretive species.

Native to the blackwater peat swamp drainages of southern Kalimantan — very soft, very acidic, tannin-stained water with dense leaf litter and minimal current. One of several new betta species described from Borneo in the past two decades as systematic collecting in remote peat swamps has revealed previously unknown diversity.

Males display vivid blue iridescence that is particularly striking given the dark body base. The species is a relatively recent addition to the hobby and remains uncommon — a genuine find for wild betta enthusiasts. Care requirements are demanding but similar to other Bornean peat swamp specialists.

Extreme blackwater conditions with pH 4.0–6.0 and very soft water are essential. Indian almond leaves, peat filtration, and blackwater extract should all be employed. A 10-gallon species tank with dim lighting, dense leaf litter, and minimal water movement replicates the natural habitat well.

This species is a paternal mouthbrooder — after spawning, the male collects the eggs and incubates them in his mouth for approximately 10–14 days until the fry are free-swimming. During this period the male will not eat and should not be disturbed. It is a remarkable behavior to observe — the male's throat visibly bulges, and he will periodically reposition the eggs in his mouth. The fry emerge as fully formed miniature versions of the adults, already capable of hunting small prey. This mouthbrooding strategy produces fewer but better-protected offspring than the bubble-nesting approach of Betta splendens.

Our wild bettas are kept in individual filtered, heated, and UV-sterilized homes — each fish with its own stable, carefully maintained water environment. Wild bettas are more sensitive to water quality than domesticated varieties and are maintained accordingly.

Wild bettas should be kept as species-only — they are not suitable community fish. Males of most species are aggressive toward conspecific males and can be stressed or harassed by the presence of other fish. A dedicated species aquarium gives wild bettas the stable, quiet environment they require and allows their natural behaviors to be observed fully.