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what are the differences between short-tail females and males?

the females have egg tubes and the males dont have egg tubes.

generally after u see alot, u can tell very fast, i know that people have different ways, but i can't stand when people say

a,aggression
b,color
c, stripes

realy after u see a few, u can pick up ur own traits that u will look for,

i look at the face of the fish. males generally will have a bolder face, where the female will have a smoother face, again sounds silly, but after u see a few u will being to notice even little things and then u can easily tell them apart.

There's many things you can look out for, among them being the oviposter (egg tube), body shape, striping, and others, like chris mentioned.

Oviposter can be misleading because some males can show false oviposters, but it's generally a good guideline.

Once you get to know bettas, you'll be able to tell the more streamlined shape of the male from the plumper curves of the female. It's not a failsafe method, but it works if you're familiar with both sexes.

As for striping up, I've only seen my latest two betta boys ever stripe up. They're better quality than my other boys, so that might have something to do with it.

If you have a picture of a betta that you're particularly curious about, post it and we can likely help.

~Meow. Thus spoke the cat.~

Another easy way to tell in light coloured fish is this little white triangle.



Females have that, males dont


My main thing is that males have longer slender ventrals and a more streamlined bodyshape, and a larger 'beard'.[/font]

For animals, the entire universe has been neatly divided into things to (a) mate with, (b) eat, (c) run away from, and (d) rocks. - Terry Pratchett