HATCHING DEVICE FOR AQUATIC ANIMAL

摘要

A hatching device (10) comprising a hatching tank (11) and a separation tank (12) communicating with each other at the lowest portions via a small communicating port (13), a side opening (14) being formed in the side surface of the separation tank (12). The entire wall surfaces of the lower portion of the upper storing unit (12a) and the lower storing unit (12b) of the separation tank (12) are formed of colored light−shielding material (OP). Brine (D) is stored in the hatching tank (D) and the lower portion of the separation tank (12), and fresh water (E) is stored in the upper portion of the separation tank (12), with an interface surface (F) between brine (D) and fresh water (E) formed in the separation tank (12). Brine shrimp larva (2) hatched in the hatching tank (11) move in the separation tank (12) from the shielded lower portion toward the non−shielded upper portion thereof, and then swim into a water tank via the side opening (14).