Tropical Fish Keeping - Aquarium fish care and resources

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Little-Fizz 09-08-2008 10:07 AM

Sexing serpae tetras
Ok, so I've read somewhere that you can sex these guys by the shape of the swim bladder up and behind the abdominal cavity? I understand this... But I'm having trouble, I see something, but I'm not really sure if its a swim bladder or like poop or something.Does anyone have more experience with these guys? Sexing and breeding? I wouldn't mind giving breeding a go, I have a ten gallon with nothing going on in it so why not give it a try.

If anyone can give me tips or maybe even show me a picture of a male vs. a female? That would greatly help, thanks :D

willow 09-08-2008 11:12 AM

i found this on the web,hope it helps.
male at the top of pic.

Little-Fizz 09-08-2008 11:22 AM

Thanks Willow! You can see a pretty obvious difference in the two sex's in the picture you provided. Lol its a little harder to tell in my tank, but I *think* I have one male and three females. I'll probably spend the rest of my day in front of my fish tank until I'm more sure. It's really hard to tell with these guys.

1077 09-08-2008 11:39 AM

If you look really,really close the male serpae will have a tiny little mustache and the female won't. Unless the Female is Italian then the hint of a tiny mustache is not uncommon.

Little-Fizz 09-08-2008 11:46 AM

Lol, was that serious? Because I just got a good look at them and I was really looking for a 'mustache' and then I thought ... What am I even looking for.

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