So I have a new rescue I just got in yesterday. He is a tiny (1 inch long) dragon scale crown tail. I was given him because within the past week he had been returned about 3 times and everyone says he doesn't eat anything. I have had him overnight and was working with him. I put him in a gallon tank and I have tried to feed him bloodworms, pellets and even Betta flakes. I think maybe my issue is his size. So I gave him the smallest foods I can but I noticed he is almost a bottom feeder and seems to be more interested in his gravel, once the food drops he goes for it and he will take a bite, spit it out and continue doing this. I'm not sure what I can do. He follows my finger the the top and I know he sees the food. Maybe I'm just worried over nothing because he has been moved around so much. Any advice? I've never had a Betta act like this.