Last night I dreamed that someone gave me (via special delivery) a barracuda. In the dream, the barracuda was a large, brown, fuzzy mammal of the rolly-polly bear-cub type, only fuzzier, like a porcupine but not sharp, with a long, pointed snout. Cute, in a shaggy sort of way, and not unfriendly.
Most of the dream was spent worrying about whether my old housemate from ten years ago would be willing to feed the barracuda-beast while I went away on a trip to parts unknown, or at least unremembered.
When I woke up, it dawned on me that a barracuda is not a large fuzzy mammal at all.
A barracuda is a fish.