on its 2nd day, noticed some skin abrasion on its body and the dorsal fins and lateral fins, the aba has not been eating the amount it has been eating in its tank before i bought it. he has not been moving around the 200 gallon tank i placed him in and just stays near the aerator area except when surfacing for air. the LFS i bought it from said that it could be stress. they advised me in putting furan gold, methylene blue, vitamins and anti chlorine and tetracycline ... i also placed several feeders in the tank but he has not been eating them... SOS ANY ADVICE?