多板盾尾鱼 Prionurus （Lacepède, 1804） duō bǎn dùn wěi yú

多板盾尾鱼，学名：Prionurus （Lacepède, 1804），是鲈形目刺尾鱼科的一个属，是7种鱼类的通称。体呈卵圆形或长椭圆形，侧扁；尾柄细而有力。口小，端位，具一列密生的门齿状之齿或细长的刷毛状齿。体被小栉鳞，有些固生于皮肤，使得表皮粗糙如砂纸，尾柄部有数枚硬棘或骨板，有时退化或消失。

主要栖息于沿岸潮池、浪拂区到深远数十米之岩礁及珊瑚礁区，是浅水珊瑚礁区中最显眼且数量较丰的鱼族之一。属日行性，夜间避栖礁穴。为食底藻类的草食者，但亦有以浮游动物为食或滤食碎屑者。该属鱼类的稚鱼漂浮期甚长，借着长期而长距离的漂送。

百度翻译提供：

Multi plate shield tail fish, scientific name: prionurus (lacep è De, 1804), is a genus of Perciformes spintail family, which is the general name of 7 species of fish. The body is oval or long oval, with flat sides; The tail handle is thin and powerful. Small mouth, end position, with a dense row of incisor like teeth or slender bristle like teeth. The body is covered with small Chlamys scales, some of which are fixed in the skin, making the epidermis as rough as sandpaper. There are several hard spines or bone plates in the tail handle, which sometimes degenerate or disappear.

It mainly inhabits in the coastal tidal pool, wave brushing area to the far-reaching rock reef and coral reef area. It is one of the most prominent and abundant fish groups in the shallow coral reef area. It belongs to nocturnal reef, and it is nocturnal reef. They are herbivores who eat bottom algae, but there are also those who feed on zooplankton or filter debris. The juveniles of this genus have a long floating period and are transported by long-term and long-distance floating.