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I have a few and every time I think i have identified one as a female for sure, it turns out to be a male. This has happened 6 times. The fish reach the size of their parents, no sign of a sword and no point to the anal fin and then 3 weeks later, voila, magical male!
I know some fish change sexes but I am pretty sure Swordtails aren't one of them. Just an oddity that really makes for sexing these little critters really hard until they are sexually mature, not just the size of the parents.
I know some fish change sexes but I am pretty sure Swordtails aren't one of them. Just an oddity that really makes for sexing these little critters really hard until they are sexually mature, not just the size of the parents.