Welcome aboard r.13.

Someone will chime in with more information.

Sometimes, fish get more susceptible to sickness/infections when they are stressed. How big are the bluegill? Maybe they are overcrowded. Are there other fish in there besides the dozen bluegill and the single bass?

Also, water quality might be at issue.


Excerpt from Robert Crais' "The Monkey's Raincoat:"
"She took another microscopic bite of her sandwich, then pushed it away. Maybe she absorbed nutrients from her surroundings."