I have one fish a dwarf gourami, one small aquatic frog, and two pelcos. My dwarf gourami is missing almost all of his upper lip it started out with a small cut and now most of it is gone, he has been eating fine and moving around fine and acts perfectly normal. Then I come home today and see a fairly big bump under his eye. I have no idea what’s happening to him there’s no other fish for him to fight so I’m not sure how he’s hurting himself and I’m scared now for him with that big bump.
Separate him out into a hospital tank if possible. He could be injuring himself on tank furniture (plants, rocks, etc.). You can treat using a broad spectrum antibiotic such as Maracyn or Kanaplex. Find them in the aquarium section of the local Petco or fish store. Plain aquarium salt (NOT table salt) can also be used to aid healing. Dissolve 1 teaspoon per gallon of water in a cup of tank water and gently pour it into the tank. Treat for 7-10 days then perform partial water changes to decrease salinity. Use only aged or conditioned water that is temperature matched to prevent further stress or shock.
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