Goldfish Parasites

Goldfish parasites, ammonia or nitrate poisoning?

Goldfish parasites cause fish to itch and scratch on the substrate or decorations
Hello Venus! this is my first time posting but i need your help

My goldfish, Fineas, is 5 yrs old, a Fair fish, and has been healthy all this time until a month ago when i think he got ammonia burns (black smudges), a white coating, red veins on tail, white eyes, fin rot…you name it. I talked with two vets who’s own goldfish did not make it with the same symptoms, so they could not tell me much! I changed water frequently, added a small amount of salt to the tank as well as salt baths, bought testing tools, zeolite for the filters (i have a duo).

Goldfish parasites

During this time, he hung at the top of the tank but continued to eat and got black spots which are healing burns. I took the top off of the tank to allow more air. See 2 pics, fin3 & fineas, taken then. Since then, he’s recovering from that whole freak-me-out scene! which i feel good and thankful for. But, now I’m beginning to see a few small white spots on his coat at the top of his spine and on his tail. Since┬ánewFin, hard to get as he’s more energetic! I have other pics too. are these parasites? could they be scarring from the burns? issues with water?

Goldfish poisoned

I have a 30 gal tank, he’s the lone fish, a double filter, air stone, i only use live plants (anachris) that he loves (i took all the live plants out and threw them away for now). I continue to test for ammonia (use kit which tests at 0 – .1) and nitrate/ph/etc using strips. My ph and chlorine on the strip test in a caution zone. I’ve ordered your garlic/salt remedy but just want to do what’s best for Fineas rather than guessing-making things worse as he’s been through so much and survived me thus far! thank you

Parasites Goldfish Koi