Far from its home in Indonesia, a brightly colored creature moved around in an aquarium. Scientists peered into the tank, studying their pet-turned-specimen — and discovered it was a new species.

Far from its home in Indonesia, a brightly colored creature moved around in an aquarium. Scientists peered into the tank, studying their pet-turned-specimen—and discovered it was a new species.

When a team of scientists studying the brightly colored and common New Guinea crayfish ordered some new animals for their lab, they were in for a bit of a surprise. They uncovered a species of the ...