Hi. I got Sonny and Fredo from Petsmart about 6 weeks ago. I have two identical 5 gallon aquariums: heated 80-82, filtered, live plants and sand substrate. They each have the tank to themselves. About 10 days ago Sonny stopped eating the pellets. I changed to flakes which he ate at first, then stopped. Same thing with his favorite, frozen bloodworms. 5 days ago he became lethargic and either hides behind the plants or lays on the sand. He barely swims around anymore. I also just noticed these bumps on his face. Does any one know what this is? PS......1. I do regular cleaning and water changes 2. Fredo is doing just fine 3. Sonny's tank is more heavily planted (could this be from a plant??).