bluedempsey said:they don't mess with the ray?
the normal uaru.a DONT mix with rays and will always peck at the rays disk
the uaru.f are the perfect mid-water fish for a aro ray tank
when i got them i was told they were hard to keep but i have not had any problems
i think the key to uaru.f is make sure you have a UV
i love them and the eyes are realy as red as you see in the pics