Hi! There are several examples of squid species that shoal, usually linked to major fishery activities (e.g. Illex sp. fisheries). However, it is not clear why some species do it (e.g. some loliginids and some Omastrephids) and others clearly don´t (e.g. some Onychoteuthids, some Histioteuthids, etc). My query.... is there a review out there assessing this issue and if any authors questioned what could be the driving factors of this different behaviour (e.g. being coastal, food availability, morphological aspects). Obrigada!