Three new species of Psilorhynchus from the Ayeyarwaddy River drainage, Myanmar (Teleostei: Psilorhynchidae)

摘要

Psilorhynchus brachyrhynchus, new species, from the upper Ayeyarwaddy River drainage, northern Myanmar, is distinguished based on a combination of characters, including a short snout (43-48% HL), scale-less ventral surface between paired fins, and features of dorsal and caudal-fin pigmentation. Psilorhynchus piperatus, new species, from the eastern slopes of the Rakhine Yoma mountain range, lower Ayeyarwaddy River drainage, Myanmar, is distinguished based on its unique caudal-fin pigmentation. Psilorhynchus gokkyi, new species, also from the eastern slopes of the Rakhine Yoma mountain range, lower Ayeyarwaddy River drainage, Myanmar, is distinguished based on unique shape of its snout, which exhibits a deep notch at the level of the ethmoid region.