宽丝足鲈 · Giant Red Tail Gourami

Overview

Red fin margins, trailing extensions, and a blue-green to nearly black body distinguish adult Osphronemus laticlavius. This large gourami reaches about 50 cm, requiring a permanent aquarium designed for an adult rather than a small juvenile.

Distribution & habitat

Records come from Indonesia and Malaysia. Slow rivers and still waters are probable habitats, but seasonal movements known in related gouramis should not automatically be assigned to this species.

Aquarium setup

Provide at least a 180 by 60 by 60 cm adult aquarium, preferably larger. Smooth rocks and substantial wood offer shelter. Powerful filtration is necessary for its heavy waste output. Floating plants can soften the light, although vegetation may be eaten.

Diet & feeding

It accepts pellets, frozen foods, and plant material. Keep a substantial vegetable component despite its broad acceptance of aquarium foods, as natural feeding is predominantly herbivorous.

Behaviour & compatibility

Small fishes can be eaten. Suitable large companions often coexist when space is generous, but some adults become aggressive, especially in undersized accommodation.

Sexual dimorphism

Males are thought to be more colorful, so coloration is only a tentative sexing guide.

Breeding

A breeding attempt could use giant gourami husbandry as an experimental starting point. In that species, the male builds a vegetation nest, transfers eggs, and excludes the female. Eggs hatch after 24–36 hours, with free swimming three to five days later and brine shrimp nauplii or powdered flakes as first foods. Neither those timings nor a successful aquarium cycle should be assumed for this species. An attempt would require a very large aquarium or suitable tropical pond.