We can't see pictures. Is the hole near the head?
Do you have cell phone you can upload pictures too? If you go under user CP and put the pictures your album and link them we can see them.
Hole in the Head Disease
•Symptoms: lesions (holes) will appear around the head area, Lethargy, Loss of appetite
•Treatment: HITH can be treated conservatively with Aquarium salt. Add 1 tsp/gal Aquarium Salt 3 times, 12 hours apart so that you end up with 3 times the normal concentration and remember not to continue this for more than 10 days. Keep the temperature between 80-82*F and perform daily 100% water changes. If conservative treatment fails then use API General Cure OR Jungle’s Parasite Clear fizz tablets.
You should go to the top of this section and read disease 1 and part 2 to see if anything sounds like what you are dealing with.