wow you're right! Today I stopped in at my favorite LFS and saw this guppy ripping the fins off of a large oscar. Glad I had my camera with me to capture this photo as proof or no one would believe me.
Here's a salt water fish to identify (should be easy). A must have for beginners and experts alike just because they are easy to keep and loaded with personality. Hint: common name rhymes with bombslotpenny.
not a twin-spot, they get sort of dull when they get older, they also get big, around 50"s long, here are a couple pics of the same species as it gets older.