ok,my 'friend' has a 55 gal that doesnt get any water changes at all,not even once a year.the fish she has in it are,1 pearl gourami,three inches,4 cherry barbs(2 males 2 females)1 inch,3 black skirt tetras,2 inches,two tetras that look like albino black skirts,not sure1 1/2 inches,2 painted tetras(4died)1 1/2 inches,one i think the person said it was a scisor tail something,2inches,3 rainbow sharks,3 inches,2 comet goldfish,one is 3 1/2 inches the other is about 2 inches,1 common pleco,4 inches,2 dalmation mollies,1 inch.and she plans on getting a powder blue dwarf gourami,she decided to get another gourami because i told her that she couldnt put two african cichlids in the tank.also,one of her black skirt tetras is very bloated,her pearl gourami has amonia burns and is constantly gasping,and the pleco doesnt get fed anything exept what he can find,plus the scicor tail is acting like its very itchy,rubbing on rocks,but i cant find anything wrong with it.i would appreciate help on any of this,and let me know if the tank is overstocked,i might be able to pesuade her to give some of the fish to petsmart.