How do I tell the sex of an angelfish?

I have an angelfish that I am looking to pair up with another angel, but unsure of how to tell the sex and don't want to buy the same sex, because I am afraid that they may fight. So does anyone know how to tell the sex of an angelfish?

The easiest way to tell the sex of a fish is to show it a credit card, if there is no real response it's a male... if they jump up and down and start getting dressed to go shopping it's a female.

LOL funny!

I believe when the females are mature enough they develop an ovapositor(sp?) from where the eggs come out .

However, I haven't heard of much success if pairing one with another and expect them to go at it. Rather, you put a group together and watch the pairs to develop themselves.

Also males will tend to have a darker red in their eyes when they are mature... but you would not be abe to notice this unless you had a male and female in the same tank, and even then, it is not that easy. The easiest way is what fishfase30 said, get a group and let them pair off on their own.

Even experts have problems sexing angels. same sex usually does fine in the same tank. If you want to breed and get a pair put at least 6 together (medium size) and let them pair out of 6 you may get 1 or 2 pair. (out of 8 I got 2 pair). PS some angels don't have red eyes,

Yep the more the marrier. At least a 30 gallon tank and start with 10 to 12 of about the same size. Should get 2 to 3 pairs out of that. I like a planted tank as can enjoy while waiting for the fun to start, however many use very little for decoration. Good Luck

Never heard of the red eye thing, But ovipositors are the only sure way to tell and thats when they are dropping eggs. I have had two females act like a pair...one laid the eggs the other followed right behind her "fertilizing" the eggs...then 14 days later they switched and the marble would lay and silver would "fertilize".