Cobalt Blue Lobster
Latin name: Procambarus alleni
The Cobalt Blue Lobster, also known as the Blue Crayfish, is a striking freshwater crustacean famous for its intense electric-blue coloration. Bold, active, and full of personality, this species makes an eye-catching display animal in species-only or carefully planned aquariums.
Care Information
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Adult Size: 10–12 cm
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Temperature: 18–26°C
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pH: 6.5–8.0
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Tank Size: Minimum 75 litres for one specimen
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Diet: Omnivorous — sinking pellets, algae wafers, vegetables, frozen foods, and occasional protein sources
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Temperament: Aggressive and territorial; will catch fish and may attack tankmates
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Tank Setup: Plenty of hiding places (caves, pipes, rockwork), robust décor, soft substrate, strong filtration, and a secure lid (excellent climbers)
Why Choose the Cobalt Blue Lobster?
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Stunning blue colour: One of the most vivid freshwater invertebrates available.
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Hardy and adaptable: Tolerates a wide range of water conditions.
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Highly active: Constantly exploring and interacting with its environment.
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Great display animal: Perfect for species-only tanks or experienced keepers.
Best kept alone or in a species-only setup, the Cobalt Blue Lobster is ideal for aquarists wanting a bold, attention-grabbing freshwater crustacean.