I have a Koi(spelling.. not sure) and 3 large goldfish in my pond. One of the goldfish has this blackish stuff along its sides.
I treat the pond .So what have i missed? Thanks for your time!!
2007-06-07 17:17:43 · 2 answers · asked by Buster 5 in Pets ➔ Fish
I guess you've had the fish for a while and this isn't his normal coloring. Have you had the water tested for ammonia and nitrite? This can cause black patches to form if they are in high concentrations - the one may just be more sensitive to the compounds than your other fish. Another possibility is that it's from a physical injury.
Are you able to tell if the patches are from color under the scales (in the skin) or something (parasite, algae) on top? That might be a start to figuring out the problem, although it would mean netting the fish to examine it.
2007-06-07 17:37:51 · answer #1 · answered by copperhead 7 · 1⤊ 0⤋
If it's not hurting him visibly, or making him lethergic or sickly I'd say it's just a pond mold.
It might depend on how often you treat your pond .... other than that I'm not sure.
2007-06-08 00:20:59 · answer #2 · answered by Zomg 3 · 1⤊ 0⤋