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Frontosa Sex Ratios
by Eric Glab

What ratio of males to females should I keep in a breeding colony?

Surprisingly, this answer is quite simple. It doesn't really matter. I have kept colonies with high ratio of males or females with great response. The main advantage of having one or only a few males is it allows you more room for females. The more females, the more fry you may produce. Frontosa are polygamous spawners and are not pair-forming.

It is sometimes advantageous to have a larger colony then a smaller one. It keeps the dominant male directing his aggression to multiple individuals instead of just one poor fish.
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