Fantails...I've had 3 fantail fish for about 3 weeks now, one of them was fairly

[whambamsuperman]

inactive apart from when...? feeding and died this morning. The others appear to be ok, except that one is sometimes very active and sometimes does not move, could there be a problem with the other fish? If so what? Help would be much appreciated

PS sorry about the annoying layout, not enough room in question box