An aquaculture rearing system for improving space utilization and yield is disclosed in which clustered, vertical rearing tanks are provided with individual stacked habitats in the form of baskets attached to a strongback member which houses a removable feeding rod, in which the baskets are quickly detachable...http://www.google.de/patents/US4300477?utm_source=gb-gplus-sharePatent US4300477 - Aquaculture rearing system
