The SA thread made me do it . I wanted a male and a female in hopes they would breed. I've never kept these before. I don't know how to sex them. Do I have a male and a female here? I have a feeling I don't. I'm not seeing big differences but, I don't know. What do you think:? ? Also one has a lump (last pic). I've read this is due to parasites or impaction... what is it?