[header] How to raise goldfish fry [title] Remove the eggs from the tank. [step] You want to remove the eggs as soon as they are laid. If you are intentionally breeding goldfish, you may have spongy material known as " spawning mops. 
" goldfish may also lay their eggs in fixtures in the tank, such as underwater castles. Wherever your goldfish have spawned on, remove this material from the tank.