I was wondering how to tell that they are either male or female.
My tank has turned out very strange..
Its more of a community tank now, It has 2 VERY calm GT's, a VERY Calm oscar that doesnt even fight back when bitten. A new Rainbow shark, 2 small bala sharks.
I know the tank is quite stocked. The Bala sharks take forever to grow, an when they do get to a bigger size, by that time ill be in my brothers room, which means a new tank. This is a guranteed upgrade. An oscar can live in a 45 gallon tank, ive seen alot of people put 2 in the tank which I dont dream of doing. If he ever starts to seem unhappy then I will find a way around it or upgrade earlier. The rainbow shark when fully grown is going to get his own 20 gallon tank! The 2 GT's will stay with the oscar.

So the tank looks pretty bare at the moment, hard to believe with the fish list, but it looks nearly empty believe me. So I was looking for fish that dont need alot of water, dont make too much mess, and wont become a meal.

So I thought either 1 male betta.
OR; 2-3 Female bettas.

My question is, how do i tell if they are female or not?

I have never had one of these fish but I believe the males are the ones with very long fins. If you go into a fish store the males always kept separate from any other male because they will kill each other if they are in the same tank

yeah the actually body of the fish looks the same shape with both males and females however the males are nomrally larger with the elabrit tale fins, the females looks abit duller in colour too.

always have 3 females to 1 male in same tank in case u were wondering lol