Gill Issue with Male Cherry Barb
Hello! this morning I noticed my beloved male Cherry Barb had something wrong with one of his gills. I have attached some pictures of him
He is about 2 years old and the tank has been set up for about a year.
The tank parameters are as follows: pH 6.8-7.0, Ammonia 0ppm, Nitrate 0ppm, Nitrite 0ppm.
Usually, vacuum the gravel and do a water change every couple of weeks.
I have recently changed their food from Sera San Color Flakes to TetraMin Plus Tropical Flakes.
I don't really know what to do moving forward.
Is this something that I need to treat the whole tank for?
What is the likelihood of my cherry barb surviving?
How can I help him?