i dont have a video but this guys is starting to claim a few feet in front of his tank now and he just goes crazy when anything is near by i even had a fan that was moving and he went after it
Idk, I think it would be close between an Umbie and my Dovii. He keeps getting more and more aggressive all the time. He's hitting the glass so hard now it scares me. He's either going to hurt himself or he'll one day bust the tank possibly when he's bigger. He's only 11-12" now, I can only imagine how much force will be behind him when he's double his body size and mass.
*edit to say*If you can, post a few more shots of them and a full tank shot. And a vid would be super cool if you have one. They don't even have to be glass banging, I'll exempt it haha