help me pick

I'm thinking of getting another betta, I have got housing for him or her, but I am also after some tips on making a separator or what could work good as one, as I have a 20 litre tank. Would halving that be big enough for two bettas? anyway here are some photos of some male and female bettas...

So I have just recently bought a 50 gallon tank and while my water is conditioning, I have been wondering what other fish to get! I already have: - 1 Male Betta - 1 Gold Twin-barred Platy - 1 Mickey Mouse Platy - 1 Red Wag Platy I when I bought my platy's, i hadn't really planned to, I kind...

So I plan on breeding my crown tail :) This isnt for online sale or anything. Just for people and the pet stores in the area. Veiltails & crowntails are very common around here. And I have a pet store willing to take both off my hands if I breed them :).