小鼻鱼 Naso minor xiǎo bí yú

小鼻鱼，【Naso minor】体呈长椭圆形而侧扁；尾柄部仅有一个盾状骨板，有一个龙骨突。头小，头背弧形，随着成长，成鱼在前头部无角状起，亦无瘤状突起。口小，端位，上下颌各具一列齿，齿稍侧扁且尖锐，两侧或有锯状齿。背鳍及臀鳍硬棘尖锐，分别具V棘及II棘，各鳍条皆不延长；尾鳍截平或内凹，上下叶缘不延长如丝。体背侧呈褐色，腹侧白色，体侧无任何斑纹；尾鳍上下叶黄色，基部具白色斑块。骨板基部黑色。

百度翻译提供：

Naso minor has a long oval body and flat sides; There is only one shield bone plate and a keel process in the caudal stalk. The head is small and the back of the head is curved. With the growth, the adult fish has no horn or tumor like protrusion in the front head. The mouth is small, with an end position. The upper and lower jaw have a row of teeth respectively. The teeth are slightly flat and sharp, with saw teeth on both sides. Dorsal fin and gluteal fin hard spines are sharp, with V spines and II spines respectively, and each fin ray is not extended; The caudal fin is flat or concave, and the upper and lower leaf margins are not extended as silk. The dorsal side of the body is brown, the ventral side is white, and there are no markings on the side of the body; The upper and lower leaves of caudal fin are yellow, with white patches at the base. The base of bone plate is black.