Fish groups (7)

I believe the answer is:
schools
(Other definitions for schools that I've seen before include "Colleges" , "Institutes of learning" , "Institutions of learning" , "dolphins in groups, for example" , "Educates" .)
I believe the answer is:
schools
(Other definitions for schools that I've seen before include "Colleges" , "Institutes of learning" , "Institutions of learning" , "dolphins in groups, for example" , "Educates" .)