I am new here to Bettafish but am not new to having a bettafish this is my second one! I love him so much and it pains me to see him like this.
I've had him for about 2 years now. He lives in a 1/2 gallon tank - it is not filtered or heated but I have a thermometer and I monitor the water. I have always changed the water once a week and gave him the appropriate amount of food.
For about two months now I noticed some bubbles forming
on his body particularly on the back fins and the worse one is right behind is left fin - that one has become an open sore (it was white and puffy but not it just broke through his scales and I can see inside the open sore)
. Now every time I go to change his water I see pieces of his scales and body coming off! It's so horrible.
He also has white spots on his face.
About two weeks ago I started treatment, after consulting with a friend of mine who breeds bettas as well as looking at all of the websites. The treatment has been - keeping the water at a warm temperature, putting aquarium salt in, stress coat, and today I just changed the water and I am trying to see if BettaFix will work. (He was once sick before with fin rot and I used bettafix and it worked well!).
I am extremely worried because this open sore is nasty and I don't know if it is a parasite, internal/external bacteria, or fungus or what!
Also for about a week and half he hasn't really been eating much and he is active he still swims around goes to the top but he has become more lethargic than before.
What should I do? Should I get Fungus Eliminator or at PetCo they don't have any ampicillin or anything like that but they do have Rid Fungus, PimaFix, MelaFix, and PetSmart does have Tetracyline.
Any recommendations? Please I would really appreciate all help!
These pictures are from about 11 days ago. His face and body hasn't gotten worse, only that white cloudy part - it fell off and now it is just an open sore.