Ecological breeding fish tank

A water outlet of a water purifier of the ecological breeding fish tank is connected to an inlet of a water pump motor, and a water pump water outlet pipe of the water pump motor is communicated to the top of a biochemical filter tank; the biochemical filter tank comprises a biochemical ring, biochemical cotton, a filter blanket and filter cotton; the biochemical filter tank is connected with thebiochemical ring groove, and biochemical rings arranged together are arranged in the biochemical ring groove; a purified water outlet is formed in the rear end of the biochemical annular groove, and purified water filtered and biochemically treated by the water purifier, the biochemical filtering groove and the biochemical annular groove flows into the fish tank. According to the ecological breeding fish tank, the function of cultivating digestive bacteria in the biochemical tank is enhanced, the water purification and biochemical breeding effects are achieved, the powerful effect of treatingfish excrement is achieved