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How can you tell the difference between male or female Tiger Oscars ?

How can you tell the difference between male or female Tiger Oscars ?

Three ways. The most accurate is through venting; observing their vents. You'll see a discussion and pictures in our FAQs section. Secondly, if you are certain the two Oscars have identical histories (same age, grew up together in the same tank, fed the same food, same disease history, etc.) then standard Cichlid gender differences apply. Males are larger, more colorful, have longer fins, and have a more definate point at the tip of the second dorsal. However, if you do not know the history of your Oscars, or if their histories are different, this method cannot be relied on -- a mistreated male will be smaller, less colorful, etc. than a well cared for female. Thirdly, wait around and watch; the one that lays the eggs is the girl! --Mark