Akysis portellus sp. nov., a new species of catfish (Teleostei: Akysidae) from the Sittang River drainage, Myanmar

Abstract

MATERIAL AND METHODSMeasurements were made point-to-point with dial calipers and recorded to 0.1mm. Ng & Kottelat (1998) are followed for all measurements and counts, with the following additions: dorsal-spine length, which is measured from the base to the tip of the dorsal spine, head depth, which is measured at the base of the supraoccipital process (defined as the posterior margin of the supraoccipital excluding the supraoccipital process), and gape width, which is the horizontal distance of the mouth measured from one rictus to another. Meristic values with an asterisk indicate those for the holotype.

Fishes of the Genus Akysis Bleeker from India (Teleostei: Akysidae)

“…Ng and Kottelat (1998) reported the genus to have two groups based on the morphology of the mouth and the nostrils: pseudobagarius-group and variegatus-group. With the description of A. longifilis by Ng (2006), 30 species of the genus are known so far including A. prashadi Hora which was described from Indawgi lake, Upper Burma, Irrawady basin, Myanmar.…”