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Cherax holthuisi, commonly called the Apricot or Orange Crayfish, is a striking freshwater species prized for its vivid coloration and low-maintenance nature. Its gentle temperament and ease of breeding make it an excellent choice for both seasoned hobbyists and beginners alike.
In 1952, Dutch ichthyologist Dr. Marinus Boeseman collected nine Cherax specimens from Lake Aitinjo. These were later identified in 2006 by German carcinologists Reinhard Pekny and Christian Lukhaup as a new species, named Cherax holthuisi in honor of renowned carcinologist Lipke Holthuis.
Note: A carcinologist studies crustaceans.
Endemic to West Papua, Indonesia, Cherax holthuisi is found exclusively in Lake Aitinjo on the Bird’s Head Peninsula. The lake spans 2.5 mi (4 km) long and up to 1,150 ft (350 m) wide, surrounded by steep mountains. In the wild, these crayfish prefer underground habitats and are heavily collected for the ornamental trade, leading to their inclusion on the IUCN Red List.
Orange Crayfish grow up to 3.2–3.7 inches (8–10 cm). While the wild type displays orange or pale yellow hues, selective breeding has produced blue, grey, and white morphs.
Note: The origin of these color variants is undocumented.
Young specimens of Cherax species are notoriously similar. Key distinguishing features include:
In captivity, well‑cared Orange Crayfish can live 5–7 years. Wild lifespan data is unavailable.
Fully mature Orange Crayfish are generally peaceful and can coexist in community tanks, though males should be kept singly to avoid aggression. They are:
Key traits:
Orange Crayfish are omnivorous and detritivorous. A balanced diet should provide 20–30% protein and ample calcium. They consume:
Always include leaf material (almond, beech, oak) and supplement with eggshells or cuttlebone to ensure calcium intake.
Feeding frequency: 3–4 times per week for adults; juveniles may need daily feeding. Since they are nocturnal, feed them in the evening to mimic natural behavior.
They are not particularly aggressive when well‑fed, but lack of protein or calcium can trigger cannibalism.
Orange Crayfish will eat and damage most live plants. If plants are desired, use plastic or floating varieties, or be prepared to replace them regularly.
A single Orange Crayfish needs at least 10 gallons (40 L); a pair requires 15 gallons (60 L). Larger tanks are preferable for stable water chemistry and ample hiding spots.
Tip: Long, shallow tanks are better than tall ones for crayfish movement.
Crayfish are adept escape artists; secure lids are essential.
Perform 20–25% weekly water changes. If using tap water, age it for several days to remove chlorine; use a conditioner if chloramine is present.
Standard filtration suffices; avoid sponge filters that may be chewed. Canister or hang‑off‑back filters are recommended.
Provide adequate oxygenation with a supplemental pump if needed. Lighting should match any planted or ornamental needs; Orange Crayfish naturally thrive in low‑light environments.
Use fine gravel or sand for burrowing. Provide abundant hiding spots: rocks, wood, PVC pipes, or narrow crevices.
Acclimate new crayfish slowly using a drip method to match tank water parameters.
During molting, Orange Crayfish reduce activity and cease feeding. They seek shelter and may be vulnerable to predation. Never disturb them; allow them to finish molting before resuming normal tank maintenance. Keep calcium‑rich food available and retain shed exoskeletons for later consumption.
Sex can be identified by:
To breed successfully:
During mating, the male releases spermatophores onto the female’s receptacle, after which the female folds her tail and carries the eggs on her pleopods. Egg counts increase with female size and warmer temperatures. Hatch occurs 4–6 weeks post‑oviposition, with direct development—no larval stage.
Orange Crayfish can share a tank with:
Avoid:
Because of their solitary nature, a dedicated species tank is often ideal.
The popularity of Cherax holthuisi in the ornamental trade underscores the need for responsible hobbyists. Mimic their natural environment with plenty of hiding spots, correct water parameters, and a balanced diet to ensure healthy, long‑lived specimens.
