How do you tell Zebra Danios Male/Female?

[finfan]

I'm pretty new to fish, I just got four Zebra Danios, how do you tell if they are male or female??





Thanx Finfan B)

 

[Jen]

Females are a bit plumper, and the males are sleek and slender.

 

[The-Wolf]

As Canoechiq said

Can you add one more Zebra?
They would be happier in groupes of 5 at the least, this also keeps thier aggression down.

 

[Fish Buddy]

With leopard danios (I think zebras would be very similar) the males have yellow/gold anal fins (actually all the fins under the belly-I just don't know their names) and the females stay the 'normal' silver/white colour on these fins.