Abstract: A fish egg incubator including a housing containing a reciprocating mechanism, at least one connector assembly associated with the reciprocating mechanism, at least one perforated containing assembly for holding the fish eggs located at least partially below a water surface and which is associated with the connector assembly where in the reciprocating mechanism periodically moves the least one perforated containing assembly in the water in order to move the eggs in the at least one perforated containing assembly.

Abstract: A refrigerator includes a cabinet defining a cabinet storage space, a front panel door part, a drawer part that is located at a rear surface of the front panel door part and that defines a drawer storage space, a drawer cover that partitions the drawer storage space into a front space and a rear space and that covers the rear space, and at least one draw-out rail located at each of both sides of the drawer part. The drawer cover includes a partition part configured to partition the drawer storage space into the front space and the rear space, and a cover part that extends from an upper end of the partition part to a rear end of the drawer part to cover a top of the rear space of the drawer storage space.

Abstract: The present invention discloses a fish tank with a function of discharging waste water from a bottom thereof. A side at a bottom of the fish tank body is provided with a drain hole which is connected to an L-shaped tube, such that by rotating low the L-shaped tube, the waste water at the bottom of the fish tank can be discharged and by rotating high the L-shaped tube, the fresh water can be stored in the fish tank. Moreover, by providing a V-shaped transparent baffle, a bottom mud plate, a submerged motor and a breeder box which is hung up outside the fish tank, a closed food chain system is formed in the fish tank, allowing aquarium breeding to be simpler and easier.

Abstract: A breeding apparatus comprises a main water tank 10 in which deep-sea organisms are housed along with seawater; a hot water supplying device 20; and a hot water discharging device 30. A hot water pipe 22 extends from a hot water tank 21 to the bottom of the main water tank 10, an end configuring a spouting hole 22a which emits hot water upwardly. The hot water discharging unit 30 is positioned above the spouting hole 22a and circulates the hot water ascended from the spouting hole 22a back to the warm water tank 23, which is outside of the main water tank 10, via a hot water discharging pipe 31. The hot water emitted from the spouting hole 22a forms a cold water zone 12 and a localized hot water zone 11, while the interface between this hot water zone 11 and the cold water zone 12 is formed in a rapidly ascending fashion in respect to the vertical cross section of the seawater in the main water tank 10.

Abstract: A stable apparatus and method for raising fish and/or shellfish. An aquarium (12) contains pearl oysters and breeding water. A decomposition treating bath (19) is supplied with water from the breeding aquarium for decomposing excretion of the pearl oysters produced in the breeding aquarium. As a result, purified decomposition-treated water is produced in the decomposition treating bath. A feed culture bath (23) cultures a feed liquid for the pearl oysters. The feed culture bath is supplied with the decomposition-treated water. A fluorescent lamp (24) illuminates the feed culture bath.

Abstract: A fish egg-laying tank comprises a housing secured to a fish tank including a recess in the bottom having a plurality of openings on the top, an egg-laying container supported on the housing including an inverted cone-shaped member and a hole at the small end, an air chamber in the rear of housing in communication with the container, and a filter tank fitted in the recess. Water in the housing is flowed when air is pumped thereinto such that the solved feces of fishes are flowed onto the filter tank through the inverted cone-shaped member, the hole and the top openings of the recess and the eggs of fishes are dropped onto the bottom of the housing other than the filter tank through the inverted cone-shaped member and the hole.

Abstract: A spawning case for use in an aquarium comprises in combination a rectangular case body (A) and filter (B). The case body (A) is arranged within the aquarium so as to communicate with water. The case body A includes a multiplicity of passage slits (11) and a W-shaped partition member (20) having communication paths (24) formed at its valleys. The filter (B) is removably mounted on the external surface of the case body (A). The filter (B) includes on its one side an intake (C) which is brought into intimate contact with the passage slits (11), and at its upper portion a discharge port (33) capable of being selectively directed toward either the interior or the exterior of the case body (A).

Abstract: An improved tank assembly comprising a number of tanks. One of tanks holds the parent fish and has structure for allowing fish larvae to flow into another tank. In the second tank, the fish larvae can circulate and continue to grow. Food is circulated in the tank assembly, and the food particles are collected and prevented from draining out of the tank assembly. The second tank is preferably a circular tank and, once the larvae are in the circular tank, the water current can be adjusted to meet the needs of the fish. This is achieved by an air lift tube carried by the circular tank. The air lift tube operates to exchange water periodically in the circular tank. The air lift tube also pumps live food into the circular tank.