Endlis are awesome. Mine was my first poly in a while; my first being a Senegal. He's not super active, but he's not super lazy either, so it's just right. I have to monitor him too, because I was standing in the right place at the right time to see him snatch my baby datnoid in his jaws, mistaking him for a pellet. Thankfully, he spit him out, and he's okay. It's awesome watching him eat, and he's a great fish overall. Like the others have said, just keep an eye on him as he grows. Yours is young, and you've got a little while before he becomes a monster! Don't worry; won't regret getting him!