I have a 20g aquarium and have had an Albino Rainbow Shark in it for about 3 months, since I got the aquarium. I read that I shouldn't get another rainbow shark but since we loved him/her so much we got another, a regular rainbow shark about 1 month ago. The 2 get along fine. They don't bother each other and have their own hiding spots. The thing is, my albino has been hiding facing straight up behind the filter for the last few days.
Info: My orange Balloon Bellied Molly looked odd a week ago. Was scratching at the bottom and kind of white by the topfin so I figured I'd treat for velvet. I put in a protazoan med and hope things work out. I was afraid to add an antibiotic as I was scared of messing up the tank bacteria. The shark showed/shows no symptoms. I don't know why he/she is hiding. I am assuming it's sick. But I am hoping she is about to lay eggs or something as I am a laymen and am completely in denail. I found a molly dead back there last week. Is it going there to die? Water tests have been perfect for weeks (nitates/nitrates/ph/hardness/kh). We have been leaving strawb erries in the tank as it loves to eate them. Could this be a problem? Please help! I'm worried about my "Coral"!