And this fierce-looking fish is called a bristlemouth.

这种面目狰狞的鱼叫做圆罩鱼。

It happens from the smallest animals to some of the largest and the most abundant, in terms of biomass, migrators are typically small fish like bristlemouths and lantern fish that are following the vertical migrations of the zooplankton.

从最小的动物到一些最大和最丰富的，就生物量而言，迁徙者通常是小鱼，如刚毛鱼和灯鱼，它们跟随浮游动物的垂直迁徙。