Well it looks as though one of the black mollies is sick. There is a sort of subtle fuzzy white outline to him and hes just sitting at the bottom of the tank. Does this sound like "ick" or another fish disease?
I plan on getting back out to the pet store asap --- to treat the illness and buy driftwood.
Needless to say I wont be introducing Alpha until I'm sure the tank is healthy.
that sounds like a HORRIBLE fungal infection my community tank had...it killed a king betta, two mollies and a platy before i got it under control. do you use aquarium salt? it's a wonderful preventative for both fungal and bacterial infections. you might want to quarantine everyone from the tank, give it a good full-service cleaning, salt the water and apply some Jungle, and then slowly start to reintroduce those fish you are certain are healthy. any sick fish you should treat with jungle or maracin, and once they're 100% healthy reintroduce them.
So remember, when you're feeling very small and insecure,
How amazingly unlikely is your birth,
And pray that there's intelligent life somewhere up in space,
'Cause there's bugger-all down here on Earth.
Loki/Grendel/Gail/Beowulf/Camilla/River/Bathory/Arwen/Lafayette/Deb/Jack Skellington (soon)