What happen to my goldfish back

[Barry Tetra]

Aquarium salt is one tablespoon per every 5 gallons dissolved in a little tank water first. By the way, that fish is beautiful! Is it an Oranda or a lion head? Love the lemon coloring.

Its a lion head, he live with big orandas i rescued from the store.

 

[FishGuest5123]

Its a lion head, he live with big orandas i rescued from the store.

Beautiful!