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A year and 3 months later I think it's safe to say I have two boys and a girl. This is the only one left to be sexed and she's? a little under the 4" mark.
How do you guys feel about 2 guys and a girl in the same tank in the future? They're in a 65 gallon tank now. The biggest is 4.5"

Looks like a female, do you have a pic of the tail? Males will almost always become aggressive... do not be surprised if you have to separate them.