Big and small bluespine unicornfish

Adult bluespine unicornfish, such as the one above, are liberally trimmed with blue on their fins, spines, and tail streamers. They also have a horn jutting from their brows. Juveniles are also tinged with blue, but while they have blue spines, they don’t yet have tail streamers and they don’t have a horn. Once they grow a horn, their cuteness will disappear and they will acquire the grumpy look of most unicornfish.

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