體延長(zhǎng),細(xì)狹;尾細(xì)長(zhǎng),比頭和軀干長(zhǎng)1.5倍余。背面在兩背鰭間具一縱嵴。吻中長(zhǎng),寬而圓鈍。眼小,橢圓形,無(wú)瞬膜;鼻孔近口,具鼻口溝,前鼻瓣前部具一尖長(zhǎng)鼻須;口寬大,平橫。唇褶寬短,下唇寬扁,成一連續(xù)橫褶,后緣游離波曲。齒小,齒頭 (本文共 273 字 ) [閱讀本文] >>
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 體延長(zhǎng),細(xì)狹;尾細(xì)長(zhǎng),比頭和軀干長(zhǎng)1.5倍余。背面在兩背鰭間具一縱嵴。吻中長(zhǎng),寬而圓鈍。眼小,橢圓形,無(wú)瞬膜;鼻孔近口,具鼻口溝,前鼻瓣前部具一尖長(zhǎng)鼻須;口寬大,平橫。唇褶寬短,下唇寬扁,成一連續(xù)橫褶,后緣游離波曲。齒小,齒頭 (本文共 273 字 ) [閱讀本文] >>