How can i telll if my goldfish is prengant?

Question

How can i tell if my fantail goldfish is prego it keeps going by my filter n underneath it.

Answer 1

If its pregnant than it will be much fatter, and i don't think the filter has anything to do with it being "prego"

Answer 2

She`ll need a male to spawn with...

Answer 3

goldfish dont get pregnant in an aquarium. The only time it will beocme pregnant is in nature or in a very large pond.