thanks for all the info. i believe that my friend has had him for about 3-4 weeks, he said he hasnt seen him eat since hes gotten him. he moves a little bit, but stays pretty still for the most part. he doesnt seem to be curling at the edges, he just kind of lays there mostly letting the current under his disc, then moves around a little, and then back to sitting. i have not seen him poop yet. i have only had him since last night. i put him in an established tank for the night, then today i moved him to the 40 breeder, i used a filter out of another established tank and also put some water from the other tank in there also. i tested the water and there arent any nitrite, and trace amounts of nitrates. the ph is about 6.8 and the water is a little harder than it should be. right now i have some feeder guppies, 2 really small and one with a broken tail for limited mobility. other than that i think the only thing that my friend tried was red worms. i will go out and get some black worms and see. what is a good place for black worms? also, what is a treatment of metro and where can i get it? he does look really skinny, that is why i am trying to save him, i have actually gotten quite a few animals from this particular friend for about the same reasoning. what exactly do you mean by dent in the head and hipbones, does anyone have a pic?