Hello, all! I have a spare one gallon tank that I will be using for breeding RCS to give the fry as food to my betta. It's unfiltered but has plants and is being cycled using old aquarium water. What's the least amount possible I could buy that would allow them to begin setting up a stable colony? RCS at LFS is $3 per, so I'd like to keep the stocking cost down. I am aware they will lose their red coloring, which I am fine with. I've had RCS before, but all three were eaten by my betta when I tried to get them to share a tank. Also, any tips on distinguishing between males and females at the store? I'm pretty sure y'all are gonna give me a 2:1 M-F ratio.