http://forum.aqua-fish.net/ A forum devoted to aquarium fish, plants, techniques and fish keeping as a whole. en http://forum.aqua-fish.net/?topic=black-on-fish#1 Hi I am new member from South Africa and been getting to know my fish tank for just over a year. I have 5 gold fish in it. I had a problem with slime and algea in my 30 liter tank. I now have a uv filter and added viresco algea to it. My tank is sparkling clean. My problem now is that the one fish have black color on it. How do I "wash" this fish to get it off? Thanks Jas Smit selahrm 2009-03-23 http://forum.aqua-fish.net/?topic=black-on-fish#2 How old is the fish? mickey 2009-03-26 http://forum.aqua-fish.net/?topic=black-on-fish#3 One year. The fish is now clean. It would seem it comes and go. selahrm 2009-03-27