Dysommina rugosa

diagnosis

Diagnosis. Pectoral fin present; dorsal-fin origin over tip of pectoral fin, predorsal length 14.0 – 17.1 % TL; anus posterior, more than 1 head length behind pectoral fin, preanal length 26.8 – 28.8 % TL; trunk long, trunk length 12.8 – 16.4 % TL; no intermaxillary teeth; 4 compound teeth on vomer; multiple rows of teeth on upper jaw and lower jaw; head pores: IO 4, SO 3, M 6, POP 0, AD 1, ST 0, F 0; lateral-line pores absent; MVF 11 - 28 - 136, total vertebrae 133 – 141. Body light brownish dorsally, paler ventrally; dorsal and anal fins with white margin, posterior one third of anal-fin base and posterior one-seventh of anal fin black.

Review of the arrowtooth eel genera Dysomma and Dysommina in Taiwan, with the description of a new species (Anguilliformes: Synaphobranchidae: Ilyophinae)

distribution

Distribution. Widespread in tropical Atlantic and Indo-West Pacific Oceans. Specimens examined in present study were collected at depths of 376 – 609 m.

Review of the arrowtooth eel genera Dysomma and Dysommina in Taiwan, with the description of a new species (Anguilliformes: Synaphobranchidae: Ilyophinae)

discussion

Remarks. A rare species occasionally collected by bottom trawl from northeastern and southwestern Taiwan.

Annotated checklist of eels (orders Anguilliformes and Saccopharyngiformes) from Taiwan

distribution

Distribution. Dysommina rugosa was described from off the eastern coast of the United States (30 º 53 ’ 00 ” N, 79 º 42 ’ 30 ” W), and is known elsewhere from the Caribbean and Brazil in the Atlantic, Hawaii in the Pacific, and Mozambique in the Western Indian (Haimovici et al. 1994; Robins & Robins 1989).

The deep-sea Anguilliformes and Saccopharyngiformes (Teleostei: Elopomorpha) collected on the Brazilian continental slope, between 11 and 23 S