Right now It's a Community tank, But it is boring me. So i want to get another Pirahna. What would be good In a 33g? I already have a rhom, caribe, Rb's and Piraya. Maybe a Spilo? I dunno! Thats why I am asking! Oh and I only want one Pirahna, so he has do be a solitary fish... Myabe Elongus?