Paint your aquarium blue with the fascinating Florida crayfish

The Florida crayfish is exceptional and striking, so it triggers a bit of hype. Photos: dpa

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It's been around pet shops for more than 20 years, actually, but only just recently has it come to conquer more and more home aquariums: “Procambarus alleni”. Better known as the blue crayfish or Florida crayfish, its name says it all. The up to 12cm crayfish – plus pincers – is impressive not just due to its size, but also its dazzling blue colour.