Is there anything I can do for a very sick (dieing?) P Bass. It's about three months old, two days ago eating fine on Tilapia. Today it's laying on the bottom breathing hard with a red tinge to it dorsal and pectoral fins. Other two Bass are fine, water parameters are 0 ammonia 0 nitrite 5 nitrates. They are in a 40 gal long growout with about 500 gph turnover. I doubt there's anything that can be done, just wanted to make sure. Thanks