I got a halfmoon male betta fish a few months ago. He is in a two gallon tank, water exchanges happen 30% every week, I use water conditioner and keep a somewhat regular feeding schedule and he also has a snail for a friend. When I went to feed him today I noticed that he didnt come to me like he normally does. I then put out a few pellets that I use as treats and he put them in his mouth and spit them back out. I literally spent an hour this morning trying to figure out what's wrong and I'm at a loss. I don't think he has fin rot but I'm not quite sure. Im also going to do a full clean of the tank today to see if that helps! Any suggestions??