Hole in my Cardinals head...

[alink708]

My largest cardinal has a hole in his head between his eyes,its kind of white in color...then right behind the hole is a lump. Its been there for a few months. He's acting,swiming and eating just fine. No other fish have anything wrong with them. Any idea what it could be? Been trying to get a picture of it for an hour but no luck.

 

[fort384]

Search "hole in head disease". You will find a lot of information.

 

[alink708]

Thanks Fort. 15 minutes of reading so far and it looks like im probably going to try to treat him with the flagyl for hexamitiasis.... I dont see how it could be my paramiters so im guessing its a parasitic thing. Everyone else in the tank is fine. Its wierd,hes the best looking cardinal in there...brightly colored and HUGE and fat!
Do you think I should quarantine him to treat or treat the whole tank? Tank consists of 10-12 cardinals, my pleco and who knows how many erithromicrons. I say who knows because they are so small and hide...plus they are continuously breeding!

 

[fort384]

Check the others carefully - if there are no signs of distress, and you have the ability to quarantine and treat, then I would definitely recommend that.