Blue Crayfish
Procambarus alleni
Water Parameters
About
Robust crayfish with electric blue coloration. Popular but destructive species that requires a dedicated aquarium.
Behavior & Temperament
Aggressive and territorial. Actively digs, rearranges décor and pulls up plants. May capture slow‑moving fish. Best kept alone or in pairs with plenty of hiding places.
Feeding
Omnivore - crustacean food, fish, vegetables, frozen foods, snails, aquatic plants
Breeding
Oviparous. Females carry 100–300 eggs under the abdomen for 3–4 weeks. Fry stay with the mother for 1–2 weeks. Female is aggressive when protecting brood.
Care Notes
Requires an aquarium with a secure lid (it escapes). Hiding places are mandatory for safe molting. Do not use live plants (they will be destroyed). Well‑oxygenated water.
Compatibility
Best kept alone or with fast surface-dwelling fish. Incompatible with plants, shrimp, snails, and bottom-dwelling fish.
Quick Summary
| Scientific Name | Procambarus alleni |
|---|---|
| Family | Cambaridae |
| Category | Crustacean |
| Care Level | Intermediate |
| Water Type | Freshwater |
| Max Size | 15.0 cm (5.9") |
| Min Tank | 100 L (26 gal) |
| Min Group | 1+ |
| Diet | Omnivore - crustacean food, fish, vegetables, frozen foods, snails, aquatic plants |
| Temperament | Aggressive and territorial. Actively digs, rearranges décor and pulls up plants. May capture slow‑moving fish. Best kept alone or in pairs with plenty of hiding places. |
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