The invention relates to an aquaculture basket (10) including a top basket part (20), a bottom basket part (30) and at least one door (40). The top and bottom basket pans (20, 30) include connection means (22, 24) for connecting the top and bottom basket parts (20, 30) together. The top and bottom basket parts (20, 30) are interchangeable so as to reduce manufacture costs and to make assembly of the basket (10) easier. The top basket part (10), bottom basket part (20) and the at least one door (40) form an enclosure for housing an aquaculture product. The basket (10) typically includes a door (40) at either end of the basket (10). The top and bottom basket parts (20, 30) are typically identical in construction. The invention also relates to an aquaculture basket attachment system. The attachment system including a connection area (32) integrally formed with or connectable to the basket (10) and a connection member (50) arranged for attachment to the connection area (32). The connection area (32) includes a plurality of connection parts arranged so that the connection member (50) can be attached to the connection area (32) in one or more alternative positions whereby the aquaculture basket (10) can be attached to a support line (100) or other part by means of the connection member (50).