my new biggest comet is flashing, not all the time but she keeps wiggling her fins, and she is flashing lightly against the gravel and driftwood and sides of the tank. i cant see anything on her, no ick, not white patches, she looks fine, but shes also going to the top of the tank a lot and gasping and hanging at the surface. :help: do i treat with anything or leave her to it. water readings are ammonia 0, nitrites 0, nitrates 10, did a 25% water change last night, dechlorinated all water in bucket before adding to tank, nothing out of the ordinary. her fins ect are fine, and shes not looking too stressed or anything, just lazy and flashing sometimes. my smaller comet is also flashing very occassionally, and i think possibly one of the big fantails tho they are so clumsy at turning it may not be flashing at all :help: