by Fuzzy on Tue Oct 23, 2007 8:40 pm
The only sure way to sex an Oscar is by venting the fish. This means removing it from the water, and looking at the shape of the "vent". In Males the "vent" is triangular shaped, and in a female, its is oval. The fish needs to be at least six months old, to get it right, and the person looking, needs to be experienced at venting fish. I would not recommend, trying to vent a fish, unless you have seen someone, or been shown how by someone who knows.
As for breeding Oscars, they are fairly easy to breed, if you get a breeding pair.
Fertilized Oscar eggs, are beige, and unfertilized eggs, are white.