I am a sixteen year old new beta owner who received Sir. Squishy as a birthday present on October 5th, 2008. When I first got him, his fins were curled up and he was an over all dull-black color... Few day's later his fins were stretching out more and his coloration improved significantly... (I suspect where ever the guy who bought him for me got him from [probably walmart

] didn't take very good care of the poor thing...) Anyways... recently I've noticed slight discoloration near his gills...then what looked like a scar... and then I noticed some swelling. I feed him about four food pellets every 12 hours apart (6AM and 6PM...the little guy reminds me to take my medicine

) He is currently in a one gallon container for the moment. And I added a teaspoon of salt to his water. I clean his water once a week and use aqua-safe to treat the water.
I am pretty darn sure he has a bacterial infection of some sort. He has been eating a maximum of two pellets per feeding and spitting them out often. He was acting normal until last night when I noticed he was swimming like crazy scratching his "scars" anywhere he can (gravel and side of tank). I suspect this is making his infection worse...(kind of like poison ivy on me). After putting salt in his water, the swelling went down and the scar shrunk in size. I live in a small town where the closest good pet-store is a long way from home so I can't get Sir. Squishy there and back... and ask specifically what is wrong with him...
My question is how do I treat him and what can I do to make him feel better??????????
below are pictures of him. I used a magnifying glass with the camera lense to get a clearer picture (he swims so darn fast...it took me about an hour to get non-blured pictures):
Right Gill swelling and scar pre-salt addition:
Right Gill swelling and scar post-salt addition:
Left Gill swelling and scar post-salt addition:
Any beginner-at-betas advice is greatly appreciated!!! please and thank you!
~Mayisha