Q: I have 6 adult angelfish and I would like to breed them. According to the store where I bought my angelfish, 3 are females and the other are males. How can I confirm his claim, in another word, how to differentiate between the male and female? Last but not least, how can I help them breed successfully?

Even experts agree it is very difficult to differentiate the sex of angelfish. If the store “dared” to confirm the sex, then you have to take their word for it.

As to breeding angelfish, seasoned angelfish aquarists would usually purchase a group of angelfish at their juvenile stage and let them grow together. When these angelfish are sexually mature, compatible fish will pair off and mate, without any intervention from us humans. In any case, angelfish are very choosy about their mates.

What you will also notice is that the paired angelfish are constantly in each other company. When they’re ready to mate, they will occupy and clean a portion of the tank, chasing other fish away from their proposed mating spot. Again, you aren’t required to do any preparatory work for their mating ritual in order for them to breed successfully.