Clawed blue creature found in pet aquariums worldwide turns out to be new species

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Far from its home in Indonesia, a blue, clawed creature moved around an aquarium. Scientists peered into the tank, studying their pet-turned-specimen — and discovered a new species. Researchers in Czechia acquired several freshwater crayfish from a pet trader specializing in “ornamental aquatic animals,” according to a study published Aug. 10 in the journal Zootaxa. Crayfish are also known as crawfish or crawdads. Freshwater crayfish are “popular ornamental animals” in the pet trade, researchers said. Several different species are all sold under the common name of “blue moon crayfish.” These species are collected in Indonesia, then exported to Europe, North...