How to tell if my goldfish is a boy or a girl?

Question
how to tell if my fantail fish is a boy or a girl

Answer
Hi Claire,

It can be slightly difficult to tell the difference between a male and female Goldfish. One of the main differences is that during breeding season, males will develop white 'pimples' along the rays of the pectoral fins and also near the gill area. If your Goldfish has these, it's definitely a male. Also, the bellies of females are larger than males, especially if kept with a male Goldfish.

See the link below for additional info on sexing Goldfish.

http://www.geocities.com/Tokyo/4468/fishsex.html

Good Luck, and Happy Fishkeeping!