Acanthocobitis sinuata

Overview

From southern peninsular India, Acanthocobitis sinuata has curved tail markings and a reduced lateral line. Generally nonaggressive, it suits a sheltered sandy aquarium with gentle companions. Historical confusion with a similar species makes identification by trade label alone unreliable.

Distribution & habitat

The type locality lies in Wayanad, Kerala, probably within the Cauvery system. Its apparent wider range covers drainages south of, but not including, the Krishna.

Stream sections combine open sand, cobbles, rocks, and accumulated leaf debris. One Western Ghats site alternates shallow faster runs with broader deeper sections and substantial bankside vegetation. Seasonal monsoons likely alter flow.

Aquarium setup

Sand, smooth boulders, roots, branches, and dried leaves create multiple shaded refuges. Robust attached plants can be used, while brighter patches encourage biofilm.

Uniformly strong flow is unnecessary. A river-margin layout or mature rocky stream setup can work if maintenance is consistent and enough shelter is available.

Diet & feeding

Insect larvae and other small animals are probable natural foods. Sinking dry products are accepted, with regular small live or frozen water fleas, Artemia, and bloodworms providing variety.

Behaviour & compatibility

Peaceful schooling cyprinids of similar or somewhat smaller size and compatible loaches are useful options. Suitable hillstream loaches can share a flowing setup, but more aggressive nemacheilids should be avoided. Shared loach identity does not guarantee compatibility.

Sexual dimorphism

Adult males are expected to be slimmer than females.

Breeding

Reproduction is unrecorded.

Notes

The lateral line ends around the dorsal region, unlike the longer line of some similar fishes. Distribution, fin rays, and markings contribute to identification, making collection provenance useful.