Glass Catfish With Some Red Marks!? =/

[fishychick77]

one of my glass or ghost catfish has red marks not on her body but by her head more....im worried its something bad i love my glass cats i have a pair of them for about 2 years now anyone know what it might be? i put bacteria treatment in the tank too

 

[raptorrex]

one of my glass or ghost catfish has red marks not on her body but by her head more....im worried its something bad i love my glass cats i have a pair of them for about 2 years now anyone know what it might be? i put bacteria treatment in the tank too

to be sure, i'd need a picture. but i have seen this in many glass cats. as far as i was aware, none were ill.