
I was hoping someone could help me, because no "expert" at any pet store can. My bubble eyed goldfish, "cheeks", started to develop a little black coloring on the bubble of his eye. This happened once before when we first got him, and it went away. This time, the black coloring began on the top of his head between his eyes, and within a few days has covered most of the top of his head. There is also black coloring on the edges of his fins, sides gills, and some scales here and there. He is swimming around and acting normal. He is eating and, from what I can tell, pooping normal. When I asked my petstore about it, they told me he was changing color from the temperature of the water, like a "suntan". Unable to be comforted by this explanation, I did some research and read something about "black smudge disease", supposedly caused by ammonia burns or something, but there wasnt much information about it, as it stated in the article there isnt much known about it. Therefore, there also wasnt much information about what to do to cure it. I dont know if this is dangerous, life threatening, or what, and I am so worried about cute little cheeks. I was hoping maybe someone knew more about this, and what to do. I never see it listed under goldfish ailments. Please help. In addition, I noticed a "blood like" red colored appearance of inflamation under his eyes on the inside. Is this a hemmorrage? Is it related?
Ammonia was high, but we have begun frequent water changes, and added ammo-chips to reduce it as of yesterday.
Nitrate also high-dont know what to do
PH went from 7.2(when this first occured) to 7.0 as of last water change
29 gallon tank for past 6-7 weeks
filter is whisper 30
Ussually change 30-40% of water once a week, but changed almost whole thing after this incident
5 goldfish in tank, one is 3 inches, the others about 1-2 inches. Also a betta, and 3 neons very attatched to goldfish
Have always used ammo-lock occasionally, tap conditioner... right before this happened began adding salt to keep fish healthy
Green goldfish flakes, sinking pellets, and goldfish shaped color enhancement and nutrient pellets...occsional tropical flake crunched and added
I dont notice any unusual behavior, he habitually eats at the bottom most of the time, but he is swimming about fine.
THANK YOU FOR YOUR HELP