The invention discloses an aquaculture tank. The aquaculture tank comprises a tank body, a tank cover and a transverse partition plate in the tank body, wherein a transverse retaining net piece is arranged in a water storage cavity; a plurality of collection mechanisms and a plurality of actuation mechanisms are arranged on the tank body. Each collection mechanism comprises a collecting pipe, a collecting cylinder and a pressing collection plate, and each actuation mechanism comprises an actuation cylinder and an actuation balancing weight. The upper ends of the collecting pipes, main collection chambers, auxiliary collection chambers, the pressing collection plates and the lower ends of the collecting pipes are arranged in sequence from top to bottom, and the collecting pipes, the pressing collection plates, main actuation chambers, auxiliary actuation chambers and the actuation balancing weights are arranged in the axial directions of internal actuation pistons in sequence; the maincollection chambers are communicated with the main actuation chambers through air pipes, and the lower ends of the collecting pipes are provided with collection grids. The aquaculture tank has the advantages that fishes and other aquatic products can be loaded, cultured and transported, when the tank is used for fish transportation, impurities on the water surface can be automatically intensivelycollected by using external conditions, a lot of impurities on the water surface can be effectively removed, and therefore, it is ensured that more oxygen can smoothly enter water.