I just got a betta fish on Tuesday so I only had him for 2 days. The first days I had him, he was acting fine, swimming and eating, he seemed very happy.
Last night, a few minutes after I turned off the lights to go to sleep, I noticed he was hanging out on the bottom of the tank by the gravel. I turned my light back on, tapped on the glass, but there was no response from him, he just wouldn't move, only his mouth was moving. So I put a piece of food in there, turned on the fish tank light and he woke up and ate it. So I figured at the time, he just sleeping and that's why he didn't move.
This morning, he's really acting strange, usually when I put food in the tank he goes right for it immediately. This morning when I went to feed him, it took him a long time to eat and he didn't finish the fourth pellet I gave him. He's also swimming funny, almost like he's sinking :( And a couple times today he did go to the bottom to rest. I don't know what could possibly be wrong with him, I do notice in the tank little particles floating around, they look like scales to me, but I'm not sure. They're not very noticeable, only if you look closely. I'm not sure if this is normal or not. Does anyone have any idea on what could be wrong with my fish? I was reading something about giving a sick fish a salt bath, I'm not sure if I can give him one in this case since I don't know what's wrong with him. Any advice will be greatly appreciated, thanks.