Tiger Cherax care guide
Tiger Cherax (Cherax peknyi) — minimum tank 100 L, temperature 22-28 °C, pH 7-8.5.
Compiled by Aquairi from published sources · Published · Updated
Overview
Tiger Cherax (Cherax peknyi) is an Australasian freshwater crayfish of the family Parastacidae, listed in the Aquairi knowledge base as an intermediate-level species. Striking black-and-white striped Cherax from West Papua. Smaller and less aggressive than quadricarinatus.
Taxonomy
- Family: Parastacidae
- Genus: Cherax
- Scientific name: Cherax peknyi
- Common synonyms: Zebra Crayfish, Pekny's Cherax
Habitat
Cherax is a large Australasian crayfish genus (Parastacidae) with species distributed across Australia, New Guinea and adjacent islands. Many species are aquacultured for food and several brightly coloured forms have entered the ornamental trade since the 2000s. The Aquairi knowledge base records this entry from: West Papua (Indonesia).
Tank requirements
- Minimum tank volume: 100 L (26.4 US gal)
- Adult size: 10-14 cm
- Temperature: 22-28 °C (72-82 °F)
- pH: 7-8.5
- GH: 10-22 °dGH
- KH: 5-14 °dKH
- Lifespan: 3-5 years
Diet
An omnivore. Diet includes plant matter, biofilm, algae, detritus and protein in the form of carrion, small invertebrates or fish remains. In the aquarium a daily portion of sinking pellet, regular blanched vegetables and occasional frozen bloodworm or shrimp meet nutritional needs and reduce intraspecific aggression.
Compatibility
Territorial and aggressive; large adults will harm tank mates and damage plants. A solo, species-only or split-by-divider setup is the only reliable arrangement. Suitable tank mates listed in the Aquairi knowledge base: Solo recommended. Should be kept away from: Fish, Shrimp, Plants.
Breeding
Reproduces in fresh water without a planktonic larval stage. After mating, the female carries the eggs glued to her pleopods for several weeks; hatched juveniles cling to the mother for additional moults before becoming independent. Stable water chemistry and abundant shelter for the brooding female are required. Cherax females typically produce moderate to large broods of comparatively large juveniles, which is one reason for the genus’ aquaculture importance.
Zebra Crayfish Breeding Guide
Overview
Cherax peknyi is a striped freshwater crayfish of the genus Cherax, which is distributed across freshwater habitats of Australia and New Guinea, including the high-diversity Paniai Lakes region of Papua. It is an egg-laying crayfish of intermediate breeding difficulty. Like other crayfish it is territorial, so caves and hiding spots are needed.
Sexing
Crayfish are sexed by the underside of the abdomen: males and females differ in the position of their genital openings and in claw and body proportions. In Cherax, females tend to choose males with larger body mass and claws, while males prefer larger females, behaviour that reflects the size differences between the sexes.
Breeding Setup
Provide a species or carefully chosen community tank with sand or gravel substrate within the species range of 22-28 °C and pH 6.5-8.0, and supply abundant caves and shelter so a berried female can isolate herself and territorial aggression is reduced. Tankmate choice matters during a breeding project, since fast-swimming mid-water fish are tolerated while slow bottom dwellers, shrimp and snails are at risk. Stable, well-oxygenated water helps the female through the long incubation.
Spawning Behavior & Trigger
Both sexes engage in combat before copulation to assess partner quality. After fertilisation the eggs develop inside the mother's body for about four to six weeks, after which they pass to the outside and are carried attached to the underside of the female's tail (a berried female). In the wild this genus mates in early spring with the eggs hatching the following spring after their external development, a seasonal pattern that aquarium conditions tend to compress.
Egg & Fry Care
The female carries and tends the externally attached eggs until they hatch into miniature crayfish, with no free larval stage. The young remain with the mother for a short period before becoming independent. Because juveniles and the moulting female are vulnerable, dense cover and stable water quality protect the brood. A varied omnivorous diet supports the female through the demanding incubation period.
Common Challenges
Cannibalism and predation are the main risks once young leave the mother, so a heavily structured tank with numerous hiding places is essential. This species will also catch slow bottom dwellers and eat shrimp and snails, so tankmate selection matters during a breeding project.