I confirm this report from Flash. This just happened to me, and I simply
increased the tiger count...they now seem active but no one is being picked
at. The fin injured fish lived for weeks, but eventually died from abuse.


More likely the other tigers picked on Sparkle; they do have a
tendency to do that until the pecking order is established, or
when they feel like it! Mine did that until there were just
three left, and nobody messes with them.