Learn How to Sex Discus Fish Like a Pro
Learning how to sex discus fish is probably one of the most frustrating parts of being a hobbyist because, let's face it, they all look pretty much the same at first glance. If you've ever stared at your tank for an hour trying to figure out who is who, don't feel bad. Even people who have been breeding these "Kings of the Aquarium" for decades will tell you that it's more of an art than a science. Unlike some cichlids where the male is bright red and the female is a dull gray, discus are monomorphic. That's just a fancy way of saying both genders share the same colors and patterns. ...