Betta Appears To Be 'shedding Its Skin'

[Oriza]

I don't think it's fin & tail rot, because there's no blackish/burnt-like parts of the fins. But I got this betta from a local fish store about two days ago, where the other fish in the tank seemed all right. I let it accumulate to the water temperature in a vase with treated water, and then I let it go. I was about to move it to a much larger twenty gallon tank todday until I noticed little red bits of its floating around in the water, and the frontal fins and back fin look like it's shedding its skin, almost like a snake.

The water paramaters are fine-- the water is around a 6.8 to 7.0 pH, ammonia/nitrate/nitrite 0 ppm.
I haven't changed the water at all yet.
Have only fed it once, with a little bit of brine shrimp.
There are no other fish in the tank with it.
I don't know how old it is.
It's also quite a bit listless.

 

[Feather_Sword]

...until I noticed little red bits of its floating around in the water, and the frontal fins and back fin look like it's shedding its skin, almost like a snake.

I would not know what the red bits would be, but the shedding skin part sounds like a type of fungus. Is it in patches on his body and fins (like this= , or is it stringy?

It's also quite a bit listless.

Listless is a sign of trouble. What is the water temperature? Tropical fish like water 72-82 degrees, although I keep mine at a nice 78-80 degrees.

Also, how is it's poop? Is it white and stringy, regular brown poop, or no poop at all?