Cajun Dwarf Crayfish care guide
Cajun Dwarf Crayfish (Cambarellus shufeldtii) — minimum tank 30 L, temperature 18-26 °C, pH 6.5-8.
Compiled by Aquairi from published sources · Published · Updated
Overview
Cajun Dwarf Crayfish (Cambarellus shufeldtii) is a dwarf freshwater crayfish of the family Cambaridae, listed in the Aquairi knowledge base as a beginner-level species. Slim brown North American dwarf crayfish, peaceful enough for larger fish tankmates. Lives 1.5-2 years.
Taxonomy
- Family: Cambaridae
- Genus: Cambarellus
- Scientific name: Cambarellus shufeldtii
- Common synonyms: Dwarf Brown Crayfish, Shufeldt's Dwarf
Habitat
Cambarellus is a small American genus of dwarf crayfish (Cambaridae) from Mexico and the southern United States. The genus rarely exceeds 5 cm in adult length and is the most peaceful crayfish group commonly kept in community aquariums. The Aquairi knowledge base records this entry from: Mississippi basin (USA).
Tank requirements
- Minimum tank volume: 30 L (7.9 US gal)
- Adult size: 3-4 cm
- Temperature: 18-26 °C (64-79 °F)
- pH: 6.5-8
- GH: 6-14 °dGH
- KH: 3-8 °dKH
- Lifespan: 1-2 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
Among the most peaceful crayfish for community tanks. Small adults cannot threaten healthy fish, although shrimplets and small fry remain at risk. Suitable tank mates listed in the Aquairi knowledge base: Larger Tetras, Rasboras. Should be kept away from: Bottom dwellers, Bettas, Dwarf shrimp.
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.
Cajun Dwarf Crayfish Breeding Guide
Overview
The Cajun Dwarf Crayfish (Cambarellus shufeldtii) is a small North American dwarf crayfish of the Cambarellinae, a subfamily whose species typically reach only about 4 cm versus the >5 cm of most crayfish. It occurs across the Gulf states, including Alabama, Arkansas, Illinois, Kentucky, Louisiana, Mississippi, Missouri, Tennessee and Texas, and is introduced in Georgia; it favours slow-moving and standing water with plant cover and burrows into the substrate during dry periods.
Sexing
Sexes are told apart by the abdominal appendages typical of Cambarellus: males have modified front pleopods used to transfer sperm, while females carry the sperm-receiving structure between the rear legs and a broader abdomen suited to holding eggs.
Breeding Setup
Provide a planted tank with dense cover and a soft substrate the animals can dig into, reflecting their habit of burrowing during dry periods. The species is aggressive toward other crayfish, so abundant separate hides reduce conflict and give a berried female a secure refuge.
Berried Female & Young
Reproduction is direct, with no larval stage: the female carries her eggs attached beneath the abdomen and then the hatchlings, which later detach and become free-living, as is typical for dwarf crayfish.
Juvenile Care
Young crayfish are tiny and omnivorous, feeding on biofilm, detritus and fine sinking foods. Dense planting and many hides help them avoid cannibalism, and the brood should be thinned out into more space as it grows.