The invention relates to
aquaculture equipment, in particular to a
larva fish hatch device comprising a filter tank, a
hatching tank and a drainage tank. The filter tank and the
hatching tank are communicated with water sources, the drain tank lower than the
hatching tank and is enclosed all around with an opening at the top is arranged in the hatching tank, and a drain port communicated with a drain
pipe is formed in the drain tank. A hatching ring path is formed between the drain tank and the hatching tank, and the bottom of the hatching ring path is connected with the filter tank through a water inlet
pipe. An egg resistance screen is fixed at the upper end face of the drain tank, and an upper angle of elevation is formed between the egg resistance screen and the upper end face of the drain tank. According to the arrangement, when
water level in the hatching ring path reaches the upper end of the drain tank, the egg resistance screen at the upper end of the drain tank can prevent fish eggs discharging from the drain tank, so that flowing water in the hatching ring path can protect the fish eggs and improve hatching rate of
larva fish. In addition, the drain tank is arranged under the water surface of the filter tank, so that water can be automatically ushered into the hatching ring path to keep the water flowing by the aid of
water level difference, and accordingly, cost is saved.