What to do if my discus fish has a hole in its head and won't eat?

Question

My 5 inch discus fish is eating less (I feed only dry food, Hikari bio gold) and I saw a little hole on the left side of his head . Please help . Pet's info: Fish | Unknown - Fish | Male

Angel Alvarado, LVT · Accepted Answer

Test the water or submit a sample to confirm proper chemistry. Most pet or fish stores will test water for free or for a nominal fee. Correct any imbalances with partial water changes (30-50%). Use only aged or conditioned water that is temperature matched to prevent further stress or shock. Metronidazole is an effective treatment for HITH (hole in the head) disease. You can feed medicated food, treat the tank or use it for medicated soaks. Look in the aquarium section of the local pet or fish store. Follow label directions carefully.

What to do if my discus fish has a hole in its head and won't eat?

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