Stone Loach

A slender mottled brown loach with a rounded head, three pairs of barbels, and camouflage suited to gravel and stone.

A cool-water species; warm tropical aquariums shorten the safe oxygen margin.

Sexes are difficult to distinguish reliably outside breeding condition. Mature females may become fuller through the abdomen, while males of some species develop stronger colour, fin shape, or breeding tubercles.

Set up a mature aquarium at least 120 cm long with clean, well-oxygenated water, smooth gravel and sand, rounded rock piles, crevices, and a secure lid. Arrange several separate shelters and keep detritus from collecting beneath hardscape.

Stone Loach is a bottom-dwelling stream loach that searches among stones and crevices for small prey. It may rest in cover, then move quickly into current or across the substrate when feeding.

Keep 3 to 5 where the species is peaceful and space permits. For more territorial forms, a single fish or carefully observed group in a larger footprint is safer.

Adults may defend caves, rock gaps, or feeding areas from similar-shaped fish. Provide broken sight lines and multiple retreats.

Choose peaceful or moderately active stream fish that share the same temperature and oxygen needs. Avoid tiny shrimp, slow bottom fish, and combining several territorial loaches in a small footprint.

Prioritise high dissolved oxygen, cool-to-moderate temperature, strong surface movement, and very low organic waste. Heat reduces the oxygen safety margin.

Offer small sinking foods rich in aquatic invertebrate protein. Combine a dependable prepared staple with frozen or live insect larvae, Artemia, Daphnia, or similar foods.

Feed small portions at more than one point because territorial fish may guard food in a confined area.

Captive breeding is poorly documented. The fish is expected to scatter or deposit small eggs among gravel, stones, or vegetation without parental care. Seasonal cooling or warming, increased flow, and live-food conditioning may be important, but claims should be treated cautiously unless documented for this species.