I know very little about breading fish, so please excuse the stupid questions. I'm wondering if you have to get the right fish for breading or is it more about the environment? I have 2 purple fire fish that have been through some changes in behavior or should I say made me go through some changes in how I want my rock in that tank. I read up a little on keeping more than one (I can be a little bad about impulse buying), but keep running into the old "some people can do this and some people can't". I put them in and they did not get along to the point that I was trying to get one out. While trying to get one out I moved the rock around and happened to create enough hiding spots for them to have one side of the tank to their self and more or less get along now. I'm wondering if I make a tank they really like and keep everything happy can they get used to each other or do I need to find the right ones? Is there anyway I can tell male from female with the purple fire fish?