Dysomma dolichosomatum Karrer 1983

This species is distinguished by the following characters: no pectoral fin; dorsal-fin origin about 0.8-1 HL behind gill opening, predorsal length 16.5-19.1% TL; anus posterior, about 1.5 time of HL behind gill opening, preanal length 23.3-28.6% TL; trunk long, trunk length 14.3-17.7% TL; 2 intermaxillary teeth; upper jaw with 2 irregular rows of small blunt teeth; vomer with 2 or 3 (mainly 3) compound teeth; lower jaw single row of 4 or 5 small compound teeth followed by 1 or 2 irregular rows of small blunt teeth; short cirri on surfaces of chin and jaws; head pores: IO 4, SO 3, M 6 (1 with 7), POP 1, AD1, F 0, ST 0; lateral-line pores are large, prepectoral 5 or 6, total 9-11, the last at slightly beyond the gill opening posteriorly; MVF 18-27-153, total vertebrae 146-156 (Ref. 106136).

Vertebrae: 146 - 156

臺灣西南海域與莫三鼻克海峽。臺灣海域目前僅出現在臺灣西南海域。

數量少、偶見，不具經濟價值。

體細長；具胸鰭及尾鰭；體不具鱗；背鰭起點在鰓裂之後；口裂超過眼之後緣；眼小；上頷較下頷長；肛門起點遠在背其起點及胸鰭後方；體長為體高之22.9 倍，頭長之9.7 倍；尾長為頭與軀幹之2.6 倍；頭長為吻長之5.8 倍；吻長為眼徑之11.5倍；前上頷骨齒二枚。上頷骨齒細小，成兩短列，約延伸至眼之後緣鋤骨齒四枚；下頷骨之前方具四至五枚複合齒，後方為二列小齒；脊椎骨數146-153，其模式為18-28-147。體淡褐色，下方偏白；背、臀鰭為白色。(資料引述自陳，2002)

屬底棲性魚種，棲息於200-400公尺深之海域，以小型魚類、甲殼類及軟體動物為生。

Dysomma dolichosomatum is an eel in the family Synaphobranchidae (cutthroat eels). It was described by Christine Karrer in 1983. It is a tropical, marine eel which is known from the Indo-Pacific. It dwells at a depth range of 550–555 metres.