i have had him for about a week. the tank is a 55 gallon, started about three weeks ago, i have the one mollie and two danios, and about 6 or 7 small goldfish. i know the goldfish will get larger quick, so they will be transfored in the not to distant future. hope some of this helps, thanks for all replies.
this is probably ich, black mollies are prone to ich. They normally get ich when the water temperature is too cold. YOu should raise the temperature a few degrees. To treat ich, you will need may different ways to treat it since some ways work for some people, other ways dont. You will probably need to try every way until one of them works.
water changes wont really help since the ich is on the gravel, ornaments and stuff, not free swimming around the water. You can buy medication at your fish store. May i ask what temperature that tank is, what salt your using, and how much salt you are using?
while livebearers dont REQUIRE salt per se they seem to do much better with some salt. the salt also helps out with ich and fungal diseases. mollies in fact can live in saltwater if they are slowly adjusted to it. you might not NEED the salt but it certainly won't hurt and the fish will most likely do better.
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