爪哇搏鱼 · Spotted Betta

Overview

The male mouthbrooder Betta picta is a small betta with yellow-gold iridescence on the gill covers. It is among the less aggressive members of its genus and can live as a pair or small group, preferably in a quiet, sheltered aquarium.

Distribution & habitat

Known only from Java, Indonesia, it may be restricted to the western and central island. Typical locations are calm edges and pools within clear hill streams, with rocks and accumulated leaves. Records also include roadside ditches and artificial water tanks.

Aquarium setup

Provide at least roughly 60 × 30 cm of floor space for a pair or small group. Roots, wood, pots, and tubes make shaded retreats; omitting substrate is an option for easier maintenance. Leaf litter adds cover and encourages microorganisms useful as supplementary fry food. Natural peat is not required.

Use subdued light, shade-tolerant plants, and floating cover. Soft water and gentle filtration suit the setup. A close-fitting lid prevents escape while a gap above the water retains humid air for breathing.

Diet & feeding

Wild fish probably take aquatic and terrestrial invertebrates. Most captive individuals learn to recognize dry food, but regular small live or frozen Daphnia, Artemia, and bloodworms should be included. Control portions to avoid obesity.

Behaviour & compatibility

A standard community is not the preferred setting. Dedicated keeping is usually easier; any companions must be very peaceful and environmentally compatible. Pairs or groups are possible because aggression is less pronounced than in some relatives.

Sexual dimorphism

Males have broader heads and stronger coloration at maturity, with iridescent scales covering more of the head, body, and unpaired fins.

Breeding

A separate breeding aquarium with a close-fitting lid preserves the warm, humid air required by developing young. Courtship is lengthy and may include unsuccessful embraces before eggs appear. Fertilized eggs initially rest on the male's anal fin, are collected by the female, and are then spat into the water for him to catch. The sequence repeats until spawning ends.

An inexperienced or disturbed male may swallow the clutch or release it early. Leaving the female and existing companions in place is usually preferable to disrupting the tank through capture. Free-swimming young are released after about 9–12 days. The adults apparently spare them, and some breeders report faster development when fry remain with their parents.

Microworms and Artemia nauplii can be offered immediately, without excessive reliance on the latter. Use frequent small water changes.

Notes

Narrow blue edging on the male's anal and caudal fins, together with yellow-gold gill-cover scales, aids identification. The labyrinth organ provides access to atmospheric oxygen.