I'm not sure whether my guppy is sick or not-he has some strange symptoms. Today I noticed some white growths only on the very tips of his fins and tail. At first I thought his tail was getting bigger, just by normal growth, but this is happening too quickly. Every few hours I can noticeably see more growth. He has not been interested in eating today. He swims with his tail pointed downward some of the time. He slowly moves around or is motionless just below the surface. His odd behavior might be due to the loss of my other guppy, who died just yesterday. My remaining guppy has never been alone before and I don't think he knows how to act without any other fish around. My other guppy died suddenly and without any indication that he was sick. He was also a pretty old guppy. Fine one night, and gone the next morning. I don't think he necessarily gave any sickness to my remaining guppy. Could he have ICH? I can't figure what else it could be. Although, comparing his symptoms to the description of ich- he has white growths on the very edges of his fins, not "white spots". What could he have? And what does he need? Ideas and suggestions from anyone would be really appreciated. Thanks!