my little betta fish is sick, i had gone on a trip for work and it was for 5 weeks, so i had a friend look after him, but they didnt look after him to good, he tank was green and he used to be a purple fish but now he is brown and he has a lump on the side of his face so he looks all deformed, i think its fungus and that, i cleaned his tank and got him fungus treatment but two days later he still looks as sick, and it makes the water look yuk. and he used to be soooo active and had such a personality i love him, and im so angry for at my friend for not caring for him as i told what to do 
please help any ideas would help. so sad for him he looks so unhappy
please help any ideas would help. so sad for him he looks so unhappy