缘锯鳞鲈 · Malabar Leaffish

Overview

Native to India's Western Ghats, Pristolepis marginata inhabits flowing rivers and streams. Small companions may become prey, and a somewhat belligerent temperament is possible. Matching size, behavior, and current preferences matters when choosing tankmates.

Distribution & habitat

It is endemic to the Western Ghats in Kerala. Recorded habitat includes fast streams, rivers, and even some whitewater sections.

Aquarium setup

Sand, smooth stones, roots, and a reasonable current approximate its river habitat. A more gently moving planted aquarium can also work, so strong flow is not the only viable arrangement.

Diet & feeding

Animal foods dominate the natural diet, with nuts and seeds also taken. Captive fish are generally undemanding feeders and accept most dry, frozen, and live offerings. A varied menu is appropriate.

Behaviour & compatibility

Any fish small enough to be regarded as food faces a swallowing risk. Occasional belligerence further favors comparable-sized or larger companions that also tolerate flowing water. Its moderate adult size does not make it suitable for a community of tiny fish.

Sexual dimorphism

Reliable external differences are generally absent outside spawning condition. Ripe females become noticeably rounded, and a small ovipositor may be visible shortly before laying.

Breeding

Aquarium reproduction and commercial production have been achieved, but accounts of the sequence remain somewhat tentative. The male reportedly assembles pebbles into a shallow pit. Extended courtship involves physical contact and quivering before the pair moves alongside each other at the nest.

Over several hours the female returns repeatedly, leaving another batch of eggs each time. Her involvement then ends. The male guards eggs and newly hatched young until free swimming, sometimes rearranging the pebbles until the nest becomes a simple mound.

Aggression increases markedly during this period, particularly in the male. Separate breeding accommodation may be needed even when the adults previously lived successfully with companions.

Notes

Common Catopra is another trade name. Captive production has contributed to availability, but those breeding accounts do not constitute a fully established home-aquarium protocol.