Piranhas normally live in large groups that swim and feed together. Piranhas prefer to feed on dead on injured prey as killing large prey requires a great deal of energy.
Groups of fish are called a school of fish or a shoal of fish. example: The school of fish swam upstream.
It's easier to pack them in cans that way.
They do swim in groups or schools.
no
schools
Sardines if you don't know are fish......... They do not know how to elect they swim together but do not go to an actual school
Large groups of fish swimming together are better protected from predators than lone fish studyisland answr brok chick
Manatees often swim alone, but it is not uncommon for them to form groups, especially when seeking areas of warm water. Groups of manatees are called aggregations or herds.
some do
sometimes if there in the mood
Yes. They rest on rocky shores with their bretheren. But I don't think they swim in very large pods/groups. Maybe 5-10 walruses.