How do you know your goldfish's gender?

Answer:

Only by observation. The male goldfish develops white spots on his gillplates during the breeding season. When breeding the male drives the female who scatters her sticky ova on to plants and other surfaces where they are fertilised by the milt sprayed by the persuing male.

First answer by EddyJ. Last edit by EddyJ. Contributor trust: 132 [recommend contributor recommended]. Question popularity: 2 [recommend question].