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长期以来,国内绝大多数有关研究者将海鲇属Arius中腭骨齿单侧3群的个体鉴定为海鲇A·thalassinus。基于中国科学院动物研究所标本馆馆藏海鲇标本的研究发现,标本中存在两种腭骨齿的分化类型;经文献查证,其中一种应为双线海鲇A·bilineatus,该种在我国尚未见有研究报道,为一新记录种。双线海鲇与海鲇外形相似,但前者吻较钝,唇薄,腭骨齿于前部相连,游离脊椎骨数目较多(46-51vs38-43),臀鳍鳍条数较多(15-18vs13-16),无囟门沟,从而可与后者相区别[动物学报51(3):423-430,2005]。
For a long time, most of the researchers in China have identified Unilateral Thalassemia trifoliatum as a group of 3 individuals in the genus Arius. Based on the researches on the specimens of sea slugs collected by the Institute of Zoology of the Chinese Academy of Sciences, two types of palatal dentates were found in the specimens. According to the literature, one of them should be the A. bilineatus, which has not yet been found in our country See a research report for a new record species. Two-line sea 鲇 and sea 鲇 contour similar, but the former kiss blunt, thin lips, palatal teeth connected to the front, the number of free spine more (46-51vs38-43), anal fin rays more (15-18vs13 -16), without fontanelle, which can be distinguished from the latter [Acta Zoologica Sinica 51 (3): 423-430, 2005].