TL;DR: A new species of the synaphobranchid eel genus Dysomma is described from the northeastern coast of Taiwan based on 1 specimen collected by bottom trawl at depths from 100 to 150 m.
Abstract: A new species of the synaphobranchid eel genus Dysomma is described from the northeastern coast of Taiwan based on 1 specimen collected by bottom trawl at depths from 100 to 150 m. It is characterized as having an exceptionally long snout and jaw (4.6% and 8.2% of total length, respectively), no premaxillary teeth, slender and multiserial teeth on the maxillary and dentary, five large compound teeth on the vomer, a tubelike groove connecting pairs of lateral line pores, and a brownish body color.
TL;DR: A new Dysomma species is described based on four specimens collected from off Taiwan, which differs from its Taiwanese congeners in having 137-139 total vertebrae, pectoral fin well-developed, 2 intermaxillary teeth, 4 compound teeth on vomer, 40-48 total lateral-line pores, the last at about middle of body, and a uniform brownish color.
Abstract: Species of the synaphobranchid eel genera Dysomma and Dysommina from Taiwan are reviewed. A total of eight species in Dysomma and one species in Dysommina are recognized. A new Dysomma species is described based on four specimens collected from off Taiwan. It differs from its Taiwanese congeners in having 137-139 total vertebrae, pectoral fin well-developed, 2 intermaxillary teeth, 4 compound teeth on vomer, 40-48 total lateral-line pores, the last at about middle of body, and a uniform brownish color. A key to all species in these two genera in Taiwan is provided.