I have been noticing more and more that my large male angel will get spooked when there is absolutely nothing going on in the room and once almost popped open the lid and jumped out and often causes damage to my tank and disturbes the other residents. Could this be from old age because he's the only one who does it?
He is 11 or 12 years old, not sure which since I got him from my grandpa but he's mated with the other female and he has definatly not outgrown his tank, I have plenty of swimming space for them.
