Do fish really sleep?

they sleep wit there eyes open
lolz
i have done tat too
lolz
but ya i just see them floating around not doing anything
one time i came home really late witout feeding them
n i dropped food in, they did not do anything
usually once they see food they would fight for it
but they didnt do anything
so they must have been sleeping :coffee2:
when i barely got them i woke them up
all i hear n see is them crashing everywhere
 
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