Hi all, I am posting this for a friend. She has had a male betta in a 5 gallon tank for almost one year. He has been relatively healthy until last week, when he stopped eating. He usually hides in his cave anyway, but has been more sluggish than usual. Tank parameters are:
Ammonia 0 ppm
Nitrite 0 ppm
Nitrates 10 ppm
I will post a picture of the white bump that appeared on his face today. She also noticed small white worms on the glass and swimming around (which may or may not be significant).
Any help or advice would be much appreciated!