i am positive it is ick b/c i have done my research, and theres little white dots on the top half of his body and some on his face. i dont know if there's a betta color that includes white dots, im sure its ick. plus, ive only had him for about 3 or 4 weeks so i think maybe the stress caused it or the water change. i dont know how to raise the temperature because im low on money and keeping a lamp on the tank didnt seem to make it any hotter. (unless my thermometer is wrong or something) ive only had the thermometer for about a week or 2 so i hope its accurate!