How can you know that a goldfishes asleep?

Answer 1

Betta fish sleep on the bottom of the tank. I've never seen one close its eyes but they will often rest on the bottom when there is no action going on around them. Betta like to be around movement. That is why we have my betta fish in our living room.

Answer 2

It reamains motionless (drifts) in the water

Answer 3

If your goldfish is not moving around. I sometimes see my goldfish rest on a rock when they are asleep. But even if your goldfish moves it's fins it is still asleep.

Answer 4

It wont move it will usually sleep at the bottom of the tank