Betta Pugnax — widely known as the Forest Betta, Penang Betta, or Malayan Betta — is one of the larger and more robust wild betta species, growing well beyond the size of the domesticated Betta splendens. Adults display an olive-brown to brassy-gold body with iridescent scale flecking along the flank, and unpaired fins trimmed in yellow-orange with fine black-and-blue spotting. Native to fast-flowing forest and hill streams of the Malay Peninsula, southern Thailand, Sumatra, and the Riau Islands, this species behaves and grows more like a small cichlid than the cup-bound fighting fish most hobbyists picture when they hear "betta."
In the wild, B. pugnax is found among submerged roots, leaf litter, and overhanging vegetation along the banks of clear, flowing streams — quite different from the still, shallow puddles associated with B. splendens. A well-decorated aquarium with river-rock hardscape, dense planting, driftwood, and gentle water movement recreates this environment well. Unlike many wild bettas, B. pugnax tolerates a bit more current and is not restricted to dead-still water.
Males are somewhat more colorful with a more pronounced, domed head and a visibly swollen throat when carrying eggs. Females are duller and slightly smaller. This is a paternal mouthbrooder — after spawning, the male collects the fertilized eggs into his mouth and incubates them for roughly one to two weeks before releasing free-swimming fry.
Compared to many wild bettas, B. pugnax is considered relatively easygoing in temperament and can be kept in a small group (one male with two or three females) in a sufficiently large, well-decorated tank, rather than requiring strict single-fish isolation. That said, males will spar with one another, especially in cramped quarters, so give the group room and plenty of visual breaks.
Our wild bettas are kept in individually 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.
| Betta Pugnax | |
|---|---|
| Difficulty | Intermediate |
| Temperament | Moderately peaceful — males spar with each other |
| Adult Size | 3–4 inches (8–10 cm) |
| Group Size | 1 male with 2–3 females in a large tank, or species-only single male |
| Ideal Temperature | 74–80°F (23–27°C) |
| Ideal pH | 6.0–7.5 |
| Ideal GH | 2–10 dGH |
| Ideal KH | 1–6 dKH |
| Staple Food | Hikari Frozen or Freeze-Dried Bloodworms; Hikari Frozen or Freeze-Dried Baby Brine Shrimp |
| Treat / Supplement | Hikari Frozen Daphnia; Hikari Frozen or Freeze-Dried Tubifex Worms |
| Notes |
Housing: More tolerant of tankmates and moderate flow than most wild bettas Breeding: Paternal mouthbrooder — male incubates eggs roughly 1–2 weeks; do not disturb during incubation New Tank: Seachem Betta Basics at setup and every water change Note: One of the larger wild bettas — needs more space than splendens or nano species |
Inventory Accuracy
If this item is at low stock, or you are ordering all or almost all of our current inventory, there may be an inventory discrepency. We will contact you about any issues as soon as possible.
Order Processing
Please allow 24 to
48 hrs to process your order. Expect an
email within 48 hrs to let you know your order is on your way.
Store Pickup
If you choose “Pickup
in Store” at checkout, an email will be sent when your order is ready for
pickup. Orders can be picked up during
store hours, see our home page for our current hours. The pick up address is 6637 Easton Rd,
Pipersville, PA 18947
Domestic Shipping Rates
Shipping charges, if
any, for your order will be calculated and displayed at checkout.
