Comprehensive DescriptionRead full entry
Oreoglanis Smith, 1933 ZBK
Diagnosis (based, in part, on Ng & Kottelat 1999): Continuous post-labial groove; gill openings not extending onto venter; homodont dentition in upper jaw; heterodont dentition in lower jaw characterized by inner row of pointed teeth and outer row of short, spatulate (shovel-like) teeth; upper jaw teeth pointed, in two patches, joined into a continuous band; 16-18 branched pectoral rays.
Oreoglanis ZBK is distinguished from Glyptosternon ZBK , Glaridoglanis ZBK , Euchiloglanis ZBK , Pareuchiloglanis ZBK and Parachiloglanis ZBK by having a continuous post-labial groove (Table 5). It is distinguished from Pareuchiloglanis ZBK , Glyptosternon ZBK , Euchiloglanis ZBK , Myersglanis ZBK , and Parachiloglanis ZBK by having heterodont dentition in the lower jaw characterized by an inner row of pointed teeth and an outer row of short, spatulate (shovel-like) teeth (vs. a single band of conical teeth). Oreoglanis ZBK is distinguished from Pseudexostoma ZBK by having upper jaw teeth pointed, in two patches, joined into a continuous band (vs. heterodont dentition in two separated patches). It is distinguished from Exostoma ZBK by having the upper jaw teeth pointed, in two patches, joined into a continuous band (vs. having oar-shaped, distally flatted teeth in two separated patches), and 16-18 (vs. 10-11) branched pectoral rays.
Description: 6-7 dorsal rays; 16-18 branched pectoral-fin rays; 6 pelvic-fin rays; 4-7 anal-fin rays. Head and body moderately broad, strongly depressed. Skin smooth dorsally. Eyes minute, dorsolateral, and subcutaneous. Lips thin, papillated. Teeth in upper jaw pointed, in large broad band with small median indentation and rounded sides. Maxillary barbel with well-developed membrane, soft base, rounded tip, with striated pad of adhesive skin. Gill openings narrow, not extending below pectoral-fin base. Branchiostegal membranes confluent with isthmus. Coracoid process not externally visible. No thoracic adhesive apparatus. Paired fins plaited to form an adhesive apparatus.
Distribution: Irrawaddy drainage, Mayanmar, east to the Lam River drainage, central Vietnam (Ng & Freyhof, 2001; Ng & Rainboth, 2001).