So in my main tank i have an assortment of fish, salvini, texas, jack dempsey, festae, and convicts. All still under 4 inches and to my surprise, after going up north for the week, the female festae and male convict decided they were gonna mate. Smh. And now i have a nice batch of mutts, or feeders hopefully. My only problem is they seem to work really well as parents together.