About a week and a half ago, I bought a crowntail betta from a fish store, and it was in a small glass bowl so I didn't get to inspect it very well as the picture was distorted from the round bowl.. I brought it home and put it in my 29 gallon tank, but took him out a day or two later because he was nipping at my other fish.. While looking at him, I noticed a little bit of white on his fin, and also his stomach was very big. I put a thread on here asking about it, and I was told that the spots on his fin were most likely his colouring, and I could feed him some pea, and then starve him for a few days to cure his bloat. Also, the poop in the tank was only tiny, think pieces.. Kind of clumpy looking, not stringy like regular fish poop. I tried the pea, and it didn't seem to work. 2 days ago, I noticed his tail and fins had a tiny bit of fuzzy, blurry-like stuff on the tips of all of the spikes on his "crown tail" so I decided I would keep a really close eye on him, but I wasn't sure if this was just how crowntail bettas' tails are, since I have ever only owned regular ones.. The fuzz was barely there.. So I wasn't sure if I was just seeing things because of the water or something.. The next morning I woke up, my betta had 3 or 4 patches of the fuzzy fungus on him.. It wasn't really white like all of the pictures I have seen of fungus.. It was clear, but not slimy.. it was definitely fuzzy looking. I had to go out for the day, and when I left it was around 7am, and he only had a few small patches of it on him.. I got home around 6pm after a trip to the pet store for some bloodworms for him, about to add medecine to the tank, and he was laying on his side on the bottom of the tank, dead, with a thin layer of the fuzzy fungus covering his whole body. Within 24 hours, the tiny, almost invisible tail fungus took over my betta's body and killed him.. What happened?!?