How to tell if a goldfish is pregnant<br>Find out if your fish is female. The best way to find out the sex of your goldfish is to ask when you buy the fish, or to consult a vet. That said, females goldfish typically have plump bodies.
A plump female goldfish is probably pregnant.
Female goldfish typically have plump bodies, so plumpness isn't a reliable indicator of pregnancy. A fish might be plump and pregnant or just plump. Not sure why the model agreed.