Fish do not close their eyelids; Do they sleep?

Fish dont have eyelid, if not they will have eye lashes, then they can put on mascara!! Do fish sleep? Yeah they do.

Most fish spend part of every day asleep. Being asleep can mean different things to different fish. Some fish (like herring and tuna) are motionless in the water during the night. Other fish, like rockfish and grouper, don't appear to sleep at all. They rest against rocks, bracing themselves with their fins. Because of the nature of their eye (lacking an eyelid), they do not 'close' their eyes when they are sleeping.

Lucky I have eyelid, if not it is tiring to always open my eyes.