Cherax quadricarinatus
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| Redclaw Crayfish | |
| |
| Redclaw Crayfish | |
| Species | Cherax quadricarinatus |
| Difficulty | Moderate |
| Min. Tank Size | 75.708 liters 75,708.236 mL 20 US Gallons (75.7L) |
| Size | 20.32 cm
7-8 " (17.8-20.3cm) |
| sg | Freshwater |
| pH | 7.2 - 7.8 |
| Temp. | 291.483 K 18.333 °C 524.67 °R 294.261 K |
| Water Hardness |
10-20 |
| Stocking Ratio | 1:1 M:F |
| Availability | Uncommon |
| Diet | |
| Life Span |
3-5 years |
Contents |
[edit] Alternative names
- See also: Blue Crayfish
- Redclaw Crayfish, Blue Lobster, Blue Crayfish, Blue Yabby, Electric Blue Lobster, Electric Blue Crayfish, North Queensland Yabby
[edit] Sexing
- The adult male gets a distinctive red patch on his claws, this is absent on females.
[edit] Tank compatibility
- They are a bottom feeder and will eat anything they come across, as they are opportunistic eaters. It is not advisable to keep this species in the same aquarium as aquatic frogs or snails, as these are easy prey for this species. The Redclaw Crayfish should only be keep with large or fast moving fish as small and slow fish are likely to become prey. Ideally they're best kept in single species tanks only.
[edit] Diet
- These Crayfish are omnivorous, and will act as a scavenger in the aquarium, eating any food that comes to rest on the bottom. Supplement their diet with a quality sinking pellet, flake food and dried algae.
[edit] Feeding regime
- Feed once or twice a day - supplementing when necessary.
[edit] Environment Specifics
- Plenty of cover should be included in the aquarium, including both rocks and plants. The crayfish's shell/exoskeleton will corrode in acidic conditions, eventually leading to animal's death.
- If the exuvia (shed exoskeleton) is removed from the tank after shedding, the crayfish will likely die as this shed will be consumed for vital calcium.
[edit] Behaviour
- They are known to burrow, so a fine substrate such as sand is ideal. They are territorial towards others of the same species. A larger aquarium will be needed if housing more than one. Provide at least 80L (21.1 US G.) per Lobster and include plenty of cover including both rocks and plants.
[edit] Identification
- Generally they are a brilliant blue. The blue intensifies as the crayfish matures. Because of their selective breeding in the hobby, they will not loose their colouration, except in times of stress. They may show a brown colouration due to stress, but will eventually regain their bright blue colouration. They stay relatively small in the aquarium, on average only attaining a total length of 5" (12.7cm).
