 Bigfin reef squids also exhibit both schooling and shoaling behaviours . Very young bigfin reef squids will also stay close together ( shoaling ) , but do not swim together parallel to each other ( schooling ) . Unlike most other squid species , bigfin reef squids are rarely cannibalistic . Shoals can include animals of different sizes without the threat of larger members attacking and consuming the smaller members . Whether bigfin reef squids recognise each other individually still remains unknown . 
