Texas Dwarf Crayfish care guide
Texas Dwarf Crayfish (Cambarellus texanus) — minimum tank 30 L, temperature 18-26 °C, pH 6.8-8.
Compiled by Aquairi from published sources · Published · Updated
Overview
Texas Dwarf Crayfish (Cambarellus texanus) is a dwarf freshwater crayfish of the family Cambaridae, listed in the Aquairi knowledge base as a beginner-level species. Texas-endemic dwarf crayfish, small olive-brown body. Peaceful with mid- and upper-water fish.
Taxonomy
- Family: Cambaridae
- Genus: Cambarellus
- Scientific name: Cambarellus texanus
- Common synonyms: Texas Brazos 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: Texas (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: 6.8-8
- 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: Tetras, Rasboras. Should be kept away from: Bottom dwellers, 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.
Texas Dwarf Crayfish Breeding Guide
Overview
The Texas Dwarf Crayfish (Cambarellus texanus), also called the Brazos dwarf crayfish, is a small member of the dwarf-crayfish subfamily Cambarellinae, whose species typically reach only about 4 cm versus the >5 cm of most crayfish. Within the genus it falls in the West Gulf clade and is distributed in the south-west part of Texas; the wider genus ranges from the Suwannee River in northern Florida across the southern Mississippi watershed to the Nueces River in Texas.
Sexing
Sexes are distinguished by the abdominal appendages typical of Cambarellus: males bear modified front pleopods used to transfer sperm, while females have the sperm-receiving structure between the rear legs and a broader abdomen for carrying eggs.
Breeding Setup
A planted aquarium with fine substrate and many small hides suits this dwarf species, which in the wild lives in standing-water ditches with emergent vegetation and burrows when the habitat dries. Plenty of cover lets a berried female seclude herself and reduces aggression between adults.
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
Juveniles are tiny and omnivorous, grazing on biofilm and detritus and accepting fine sinking foods. Dense planting and many hides limit cannibalism, and the brood should be thinned into more space as the young grow.