Very aggressive, with a lot of personality. I had a jaguar/dovii hybrid died not too long ago. Loved the way he would interact with me. Would play with the magnetic algae cleaner by attacking it when I moved it, and got pretty good at smacking it loose. It would need a large tank. and probably would'nt play well with other fish, esp. if they fit it its mouth! I don't know about the price, if it is good or not. If you do get it, watch your fingers, jaguars have a serious bite! Great fish if you have the space for it.