So... I have had my wcmm for a while. They have been weeded out by the dumb ones that jump, so I have two left, that school with a harlequin rasbora. They live happily in a 5 gallon with my betta, for quite some time. But one has started to look weaker, older, spindlier. Tonight after cleaning and rescaping, I lay in bed watching them, and it seems he is having trouble swimming and is gasping. I know its only a 20 cent fish but I love all my fishies. I popped him in a half filled 5 gallon bucket, with an air stone, a heater, and a hide. Added a bit of aquarium salt (just under the reccomended dose) and a bit of melafix, because his fins were looking a little shabby anyways-- but once again, less than reccomended dose. I get scared. Anyways is there anything else i can do for him? He seems pretty Happy in the bucket. Just not his zippy self. Could it be old age? all the other fish in the tank are fine. Judge me for loving a minnow. I dare you. Thank you.