线纹鰕鮰 · Striped Panchax

Overview

A predatory killifish of permanent waters, Aplocheilus lineatus is not an annual species. The familiar golden aquarium form was selectively bred and should not be taken as the universal appearance of wild fish. Small tankmates and escape opportunities require particular attention.

Distribution & habitat

Native populations occur across peninsular India and northern Sri Lanka; Singapore and Hong Kong populations were introduced. Habitats range from upland streams and lakes to wells, swamps, rice fields, and occasional estuarine sites, usually with vegetation above or on the surface.

Aquarium setup

Use subdued lighting, dense planted areas, and retreats formed by wood and rocks. Floating plants provide additional cover. A tightly fitted lid is essential because the fish is a strong jumper. Multiple retreats are useful where conspecifics are kept together.

Diet & feeding

Its natural feeding strategy is predatory, although aquarium specimens usually accept live, frozen, and dry foods readily. Acceptance of prepared food does not remove the risk to smaller tankmates.

Behaviour & compatibility

Peaceful fish beyond swallowing size can be suitable companions, including appropriately sized cichlids, characins, and bottom-dwelling catfish. Conspecific aggression is possible; groups require ample room and cover rather than a densely stocked community arrangement.

Sexual dimorphism

Males generally grow larger, show stronger coloration, and have narrower dark flank bars than females.

Breeding

Adhesive eggs are laid in fine plants or spawning mops, either by pairs or in groups. One method conditions the sexes separately on plentiful live food, then introduces a well-filled female and suitable male to a dedicated tank. Provide abundant spawning material, floating cover, relatively bright lighting, and gentle sponge filtration; a substrate is unnecessary.

Soft, slightly acidic water is a starting point, but populations may differ. If spawning fails, gradually higher hardness and pH can be tried. Pairs may lay about 10–30 eggs daily over an extended period. Collect eggs gently each day and return breeders to conditioning after roughly a week to prevent exhaustion.

Incubate eggs in a small container of spawning-tank water, inspecting daily and removing fungal eggs. Hatching takes approximately 11–14 days depending on temperature. After yolk absorption, offer newly hatched Artemia, followed by microworms. Separate growing fry by size because larger individuals eat smaller siblings.