how much sleep do Os get? sometimes i wake up and they arent active, just staying put near the back of the tank. but then sumtimes i wake up and they r already swimming all around the tank. do they need X amount of hours of sleep?
Much depends on how many other fish you've got, and whether you have nocturnal fish in with the Oscars. It's not easy to tell you how long they will sleep for, Oscars will sleep if the tank is in complete darkness, but they may well be restless during the night as well.
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