This species inhabits the fast-flowing riffle zones of streams or rivers, where the substrate is composed of gravel and exposed bedrock .
Dorsal soft rays (total): 11; Anal soft rays: 8; Vertebrae: 32. This species is distinguished from its congeners by the following set of characters: a transverse lobe with 13-35 small- to medium sized conical tubercles; a prominent, unilobed, hexagon-shaped proboscis with five large-sized conical acanthoid tubercles on anterior margin and three or four medium-sized conical acanthoid tubercles on anteroventral marginal aspect; lateral surface of snout swollen with 8-18 small tubercles; depressed rostral surface of snout flat and creased; 28-29 + 3 = 31-32 lateral-line scales; 8½ branched dorsal-fin rays; 5½ branched anal-fin rays; lack of labella .: elongated; Cross section: compressed.
Behavioural data for Garra Hexagonarostris is currently being reviewed.
Diet information for Garra Hexagonarostris is currently being compiled.
Reproduction data for Garra Hexagonarostris is currently being compiled.
Freshwater; benthopelagic. Subtropical
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