The invention discloses a clownfish hatched egg collecting device. The clownfish hatched egg collecting device comprises a collecting box, a box cover, a sealing plate and a luminous source, wherein an opening is formed in the upper end of the collecting box; the box cover covers the upper end of the collecting box; hatched egg collecting holes for hatched eggs to enter the collecting box are distributed in a bottom plate of the collecting box; walls of the hatched egg collecting holes are in the frustum-shaped; vertical downward guide plates are separately arranged on two corresponding sides of the lower end surface of the bottom plate of the collecting box; chutes are separately formed in opposite side surfaces of the two guide plates; the sealing plate slides in space between the chutes; sealing rubber is laid on the upper surface of the sealing plate; when the sealing plate slides into space below the collecting box, the sealing rubber is tightly pressed on the bottom surface of the collecting box and seals all the hatched egg collecting holes distributed in the bottom plate; the luminous source is fixed on the inner wall of the collecting box; and light rays which are emitted from the luminous source illuminate the inside of the collecting box. The clownfish hatched egg collecting device is high in collecting efficiency; injury to the clownfish hatched eggs is small; and disturbance to parent fishes is relieved.