The utility model relates to an aquatic animal action viewing device. The utility model provides a following technical scheme: an aquatic animal action viewing device, including the framework, in the framework has the chamber holds, should hold the chamber including whole region and a plurality of and the whole mark chamber of placing the zone passage baffle and keeping apart placed, wholly placed to set up respectively on the baffle between regional and each mark chamber to supply the whole opening that the region switched on with each mark chamber respectively of placing, separated through the division board respectively between each mark chamber, and seted up the connection?openings that each mark chamber of confession switched on on each division board respectively. Adopt above -mentioned technical scheme, provide one kind and be convenient for observe the aquatic animal action viewing device that certain fodder, simple structure, observation structure accuracy are hankered after to the aquatic animal.