Psilorhynchus Tysoni

📖 Overview

Collected in swift flowing water of shallow to moderate (50-100 cm) depth over a substrate of sand and gravel; water parameters measured at this locality at time of collection include: 21C, pH 7.5, KH 3, GH 0 .

🔬 Taxonomy

🐟 Physical Description

Dorsal soft rays (total): 12; Anal soft rays: 8; Vertebrae: 34. Diagnosis: 6–7 dorsal saddles along dorsal midline, including 1-2 between occiput and dorsal-fin origin and 5-6 from dorsal-fin origin to caudal-fin origin; posteriormost dorsal saddle at caudal-fin origin small but prominent and represented by black or dark brown spot; L+1 and L-1 rows restricted to center of body side, not extending posterior to vertical through anal-fin origin; L+2 row absent; dorsal-fin with poorly developed dark brown or black markings along anterior margin; 2 widely separate dark brown or black markings on both upper and lower caudal fin lobes; anguloarticular portion of preoperculo-mandibular canal present; principal caudal-fin rays 10+9; total vertebrae 34 (17+17); body shallow (14–18% SL); caudal peduncle short (11–14% SL); snout short (35–43% HL); mouth narrow (mouth width 21-26% HL) . : elongated.

🌀 Behaviour

Behavioural data for Psilorhynchus Tysoni is currently being reviewed.

🦐 Diet

Diet information for Psilorhynchus Tysoni is currently being compiled.

🥚 Reproduction

Reproduction data for Psilorhynchus Tysoni is currently being compiled.

🌍 Habitat & Distribution

Freshwater; benthopelagic. Tropical known currently only from a few localities on the Mae Nam Moei and its tributary the Hue Mae Song, Tak Province, Thailand (Ref.

🌿 Ecology

📐 Morphometrics

🌡️ Water Parameters & Tolerance

📊 Population Risk & Fisheries

🐠 Related Species

🔍 Similar Species

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