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Monarch Butterflies Shrink, Get Paler After Skipping a Meal

Brilliantly colored monarch butterflies literally are what they eat—and missing even one meal can be harmful, a new study says.

Pictures: Take a Look Through Nature’s Most Transparent Animals

A team of researchers recently announced the discovery of Cyanogaster noctivaga, a brand new species of transparent fish that lives deep in the Amazon. Indeed, with its transparent skin and dazzling blue belly, the discovery constitutes an entirely new genus and, despite being very hard to see, has been given an eye-catching name that means…