Sick Fish

[Mariolatry]

I had a 55 gal with some Ricefish and a turtle and everything was doing great; no violence, good health, until I added some Goldfish. Pretty soon the fish started being lethargic, had cloudy eyes, and all the Ricefish had died. I gave the Goldfish a salt bath, and they are fine.
What I would like to know is what disease affected them. Thank you.

 

[Aiken Drum]

Please take a read through the "unhealthy fish" sticky and give as much detail as you are able.

https://www.aquariumadvice.com/forums/f17/before-posting-about-unhealthy-fish-read-this-32451.html

Without anything to go on all anyone can do is speculate. Water quality perhaps? How many, how big where these goldfish? More bioload = more waste, especially when you are talking about goldfish. Your cycle needed time to catch up, and you had ammonia in the tank?

Maybe the goldfish brought in an infection?

 

[Mariolatry]

Nitrite, Nitrate, and Ammonia levels good.
6 2in goldfish in a cycled tank.