sentence: Some fish spend most of their time schooling.
sentences_after: Breder CM Jr 1967. Tuna, herring and anchovy, spend all of their time shoaling or schooling, and become agitated if separated from the group. Others, such as Atlantic cod, school only some of the time. Partridge, B. 'et al.' 1980.
concept_name: fish
headings: Shoaling and schooling Schooling
categories: Fish Ecology