Psilorhynchus brachyrhynchus Conway & Britz, 2010
Psilorhynchus brachyrhynchus
photo by NRM Ichthyology Collection Database

Family:  Psilorhynchidae (Mountain carps)
Max. size:  5.11 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  Asia: upper Ayeyarwaddy River drainage in northern Myanmar.
Diagnosis:  Dorsal soft rays (total): 12-12; Anal soft rays: 8-8; Vertebrae: 35-35. Distinguished from other species of the genus by the following combination of characters: short snout (snout length 43-48% HL); principal rays in the upper caudal-fin lobe 10; absence of a dark irregular vertical bar across the distal edge of the caudal fin; absence of a broad swath of melanophores across the anterior half of the dorsal fin; presence of a large dark blotch at the base of each caudal fin lobe; and presence of an irregular vertical bar across the center of the caudal fin. Can be further diagnosed from all congeners by the following combination of characters: 2 branchiostegal rays; ventral surface between paired fins with triangular scale-less patch; presence of a large postepiphysial fontanelle; branched dorsal-fin rays 9; unbranched pectoral-fin rays 5; caudal-fin rays 10+9; lateral-line scales 32-34; lateral sides of body marked with 5-7 indistinct round to squarish dark blotches, arranged in a longitudinal row; caudal fin with a dark, irregular vertical bar across its center (Ref. 85329). Description: Dorsal- fin rays iii.9; anal-fin rays ii.6; pectoral-fin rays v.9-10; pelvic-fin rays ii.6-7 (Ref. 85329).
Biology: 
IUCN Red List Status: Data deficient (DD); Date assessed: 10 February 2011 Ref. (123251)
Threat to humans:  harmless
Country info:   
 

Entered by: Torres, Armi G. - 19.10.10

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