hi i have 2 black mollys one is ok but the other one keeps swimn to the top of the tank then he sinks to the bottom and just swims round right close to the gravel in my tank can any one help
Occasionally my dalmation mollies do a similar thing but only for a minute or two. If its a constant thing maybe the molly isnt happy and you should try a salt bath. Personally i've never needed to do this with mine and i have 30 or 40 now. ...