Schistura deansmarti Vidthayanon & Kottelat 2003

Body pinkish white in life, without color pattern; feebly developed suborbital flap in male, with a shallow groove outlining only tip of flap; a long, pointed flap-like nostril tube; eye subcutaneous, vestigial, in a small pit, or apparently missing; eye pit or slit often missing and not connected with groove bordering suborbital flap in male; in females, no groove in position homologous to that of groove behind suborbital flap; eye becoming indistinct at about 4 cm SL; snout conical; dorsal head profile flushed with that of body (Ref. 51711).

Dorsal soft rays (total): 12 - 13; Analsoft rays: 8

Inhabits cave with only stagnant water in the dry season and with reportedly only moderate flow in the rainy season. Occurs approximately 200 m from the entrance. Mostly found resting on the bottom, sometimes free swimming, near crevices where they hide if chased.

Schistura deansmarti is a species of ray-finned fish in the stone loach genus Schistura. It is found in cave streams in a karst landscape in the Thung Salaeng Luang National Park of Phitsanulok Province where it lives mainly on the stream beds and feeds on organic material and micro-organisms. The specific name honors the British speleologist who collected the original specimens and who works for the conservation of caves in Thailand.