Just saved 6 in Loiselli from my local fish store. He was appearing to be beaten down by a 11 in oscar and some 8 to 10 in frontosa. I got him for free but am wondering if they normally lay on there sides and cling to the bottom of the tank. It seems like he cant stay off the bottom,he stops swimming and sinks right down. The LFS which i now know has very few educated employee,told me there just shy fish and he will be fine in a week or so. Well weeks gone by and he is in a 40 gallon hospital tank away from my Oscar who i thought was intimidating him. But nothing changed,is it a disease,a ph problem maby ..Im lost i would really appreciate any suggestions? Thank you..