BipBop

My oldest and largest cory has two small white "blister" looking places on one side of his head. He's not acting sick. I don't know what it is or how to treat it. Does anyone have advice? He's in an long-established heated, filtered and cycled 10 gallon tank, and he's been a resident for almost 2 years. I tested the water today and everything is normal. Thanks in advance for any help. I'd hate to lose the guy.

TFA101

I have two with the exact same thing. I think its just coloration, cause mine are very active and healthy. Are they bronze cories? Mine are

BipBop

No, mine are pandas and jullis, but I'd love to have a bronze or two. I like the looks of them.

Mine are active and seem okay otherwise too, but I was worried, so I did some more research last night. I found out that the "blisters" are bubbles under the skin, apparently caused from adding cooler water too quickly to the tank. They can pop and get infected. The remedy listed was to get more aeration, so I put a bubbler in last night. This morning, VOILA! no more blisters on my big fat panda cory!

So maybe you could try a bubbler for your fish and see if that helps. If you do, let me know if it worked.

TFA101

Wow, I learn new stuff everyday!