Microdous amblyrhynchos sp. nov., a new member of the small-toothed sleepers (Teleostei, Gobiiformes, Odontobutidae) from Guangxi, southern China

Authors: Hu, Jiantao Country: People's Republic of China DOI: 10.3897/zookeys.1153.97139 Published: Jan. 1, 2023 Source: ZooKeys OpenAlex: View in OpenAlex

Collection: Pensoft Publishers

Keywords: Freshwater sleepers · Topics: Fish Biology and Ecology Studies, Identification and Quantification in Food, Fish Ecology and Management Studies

Microdous amblyrhynchos, a new species, the second one in the genus, from the family Odontobutidae, is described from the Hongshui River, in the upper reaches of the Xijiang River of the Pearl River drainage, Baise City, Guangxi Zhuang Autonomous Region, southern China. This species is distinguished from its only congener, M. chalmersi, by the blunt snout (vs. pointed); mean snout length/head length ratio 0.27 (vs. 0.3); eye not extending outward (vs. protruding); mean interorbital width/head length ratio 0.25 (vs. 0.11). Additionally, the results of molecular phylogenetic analysis confirmed that M. amblyrhynchos sp. nov. is distinct from its sister species, M. chalmersi.

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