I'm not having much fun lately, fishwise I've lost 2 of my 3 guppies in tte last 24 hours, and have since, been observing the behaviour of the "last man standing" (woman, actually) - she has a quivering bottom lip! You know fish lips move all the time, well THIS one's opening and closing at a rate of something like "5 per second"...is this normal...or am I being paranoid and looking for problems?!