高钦南鳅 · Ornate Tiger Sand Loach

Overview

Pogonoschistura kohchangensis is a Southeast Asian stream loach with dark bars that are often split vertically. It is less aggressive than some related loaches, but its environmental and compatibility needs make it unsuitable for an indiscriminate community.

Distribution & habitat

Confirmed records concern Koh Chang and southeastern Thailand, plus the northern Cardamom Mountains in southwestern Cambodia. Occurrence in lower Mekong tributaries is expected rather than established.

It uses shallow, often steep streams with moderate to fast flow over gravel, rocks, and boulders. Some localities contract to isolated pools during dry periods. That seasonal persistence should not be read as a preference for chronically stagnant aquarium water.

Aquarium setup

Mix sand, fine gravel, and smooth stones of different sizes. Branches and rocks should create shaded gaps and interrupt sightlines. Hardy attached plants can be used. Extreme torrent conditions are unnecessary, but high oxygen availability and appreciable circulation are important.

Maintain effective filtration and regular weekly partial water changes. Organic waste accumulation is poorly tolerated. A complex layout also gives fish opportunities to avoid one another.

Diet & feeding

Comparable stream loaches eat mainly small animal prey with lesser plant material and organic detritus. Aquarium fish accept suitable dry foods, but these should not be the sole diet. Daily small live or frozen items support condition and color.

Behaviour & compatibility

Peaceful open-water cyprinids adapted to flowing water are useful companions and can encourage this retiring fish to emerge. Compatible hillstream loaches and other carefully chosen bottom dwellers are further options. Avoid slow or long-finned fishes, which may struggle with the flow or be nipped.

It is not strongly schooling, although a group can coexist among plentiful rocky structures. Disputes may become serious in small or bare aquariums. Similar-looking loaches are generally poor additions unless ample space and careful monitoring are available.

Sexual dimorphism

Males have a suborbital flap and thickened pectoral rays bearing small tubercles. Females are expected to be fuller-bodied, especially when carrying eggs.

Notes

Roughly ten to twelve dark body bars, often vertically divided, and irregular rows of tail spots are identification clues. Aquarium reproduction is undocumented, so methods for other stream loaches are not confirmed procedures for this fish.