Fish, or goldfish anyway, never sleep. Well, they don't sleep the way we do anyway. They go into a sort of relaxed mode where they slow down but they are instantly ready to swim away if any danger appears.
it depends if your goldfish is nocturnal or not because some types are. goldfish sleep with their eyes open like most other fish to protect themselves from predators.
Carassius auratus
Goldfishes usually eat tiny bits of vegetables or meat...
It is from Spring to early Summer.
goldfish don't have legs
=you can leave them in a tank on their own for a few days=
goldfishes
Yes they do.
if they are males, yes ,if they are male and female no.
your mums fishes goldfishes bum of a mum
yes,they're a little brighter then a male goldfish.
yes
No, if you put a goldfish in hot water it will die.