Rail network should cover on the tank to prevent the fish leaping out of or infringement by birds, animals.

鱼缸上还要覆盖铁网，防止鱼儿跃出或遭鸟类等动物的侵害。

Any of various water birds of the family Rallidae, as the gallinule, rail, or coot, that inhabit marshland.

秧鸡科的几种水鸟之任一种，如番鸡、秧鸡或黑鸭，居住在沼泽地。