阿氏盘齿魮

Overview

Peaceful and lower-water oriented, Discherodontus ashmeadi is nevertheless exceptionally delicate during handling. Removal from water can trigger shock and scale loss, with exposed areas prone to infection. Transfer technique therefore matters as much as routine aquarium maintenance.

Distribution & habitat

Records involve the Mekong and Mae Klong systems of Thailand, Laos and Cambodia, though interpretations of the full range differ and populations may be localized. Forest streams and smaller rivers combine clear rapids with pools and sheltered deposits of wood and leaves. The fish feeds in deeper, faster water by day, then rests in shallow quiet areas at night.

Aquarium setup

Use a spacious, well-sheltered river layout with gravel, stones, larger rounded rocks and wood forming shaded retreats. Hardy attached plants can be used, while illuminated surfaces develop growth for grazing. Maintain high oxygen levels, moderate circulation and clean water, with weekly changes of about a third to half of the volume.

Only use an established biological system. Acclimate slowly over several hours where possible, avoiding abrupt chemistry changes. For transfers, receive the fish into a bag or container while it remains underwater rather than lifting it into the air.

Diet & feeding

Wild stomach contents indicate predominantly aquatic and terrestrial invertebrates. Fish also browse surface biofilms on rocks. Provide regular small live or frozen meals alongside good flakes or granules.

Behaviour & compatibility

Compatible, nonaggressive fishes requiring oxygen-rich water are suitable companions. Much of its time is spent low in the aquarium. Bottom-occupying cichlids are best avoided unless the tank is exceptionally large. At least six conspecifics help reduce nervousness and support natural male displays.

Sexual dimorphism

Mature females are generally larger and noticeably heavier-bodied.

Notes

Pink or red dorsal and tail coloration and a dorsal blotch retained into adulthood help distinguish it from similar species. Its former nocturnal reputation appears to have arisen because fish resting in shallow water were easier to collect after dark.