When do piranhas sleep?

Answer 1

Piranhas hunt during the day and sleep at night. If they are disturbed from their sleep they will usually flee. Their color dulls as they sleep and comes back when they wake up.

Answer 2

yes because they fart so much that others kick them out.

Answer 3

They breathe by using their gills to pull oxygen from the water via osmosis, the same as nearly all fish do.

Answer 4

they sleep under the sand