Has anyone had a gar bite at rays, I have a tropical far he use to get real aggressive during feeding and would bite the rays when he would go to eat I had to move him to a different tank but now he seems real passive.
Did the bites happen when taking food from the tank floor? I have seen gar bite other bottom dwelling tank mates during the feeding excitement. I fed my gar by hand at the surface, kept them from nipping tankmates and ensured they got their share at feeding time.
Also...it was probably not biting from aggression, more likely the rays were out competing it for food. Did you monitor if it actually got enough to eat during feeds? They can get snappy when they are not getting enough food.