Pearl Crayfish care guide
Pearl Crayfish (Procambarus acutus) — minimum tank 80 L, temperature 18-26 °C, pH 6.5-8.5.
Compiled by Aquairi from published sources · Published · Updated
Overview
Pearl Crayfish (Procambarus acutus) is a North-American freshwater crayfish of the family Cambaridae, listed in the Aquairi knowledge base as a beginner-level species. Hardy North American crayfish similar to clarkii but with paler body and more elongated claws. Aggressive and predatory.
Taxonomy
- Family: Cambaridae
- Genus: Procambarus
- Scientific name: Procambarus acutus
- Common synonyms: White River Crayfish, Eastern White Crayfish
Habitat
Procambarus is a North-American crayfish genus (Cambaridae) with hundreds of described species from the south-eastern United States, Mexico and the Caribbean. Many species occupy shallow ponds, ditches and slow streams; several have been introduced to Europe and Asia and are now widespread invasive species. The Aquairi knowledge base records this entry from: Eastern United States.
Tank requirements
- Minimum tank volume: 80 L (21.1 US gal)
- Adult size: 8-13 cm
- Temperature: 18-26 °C (64-79 °F)
- pH: 6.5-8.5
- GH: 8-20 °dGH
- KH: 4-12 °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
Aggressive predator. Adults are large enough to catch slow bottom-dwelling fish, prey on dwarf shrimp and clip soft plants; a species-only or fast top-dwelling community is preferred. Suitable tank mates listed in the Aquairi knowledge base: Solo recommended. Should be kept away from: Fish, Shrimp, Snails, 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.
White River Crayfish Breeding Guide (Procambarus acutus)
Overview
Procambarus acutus, the white river crayfish, is a North American cambarid with a disjunct native range across the Atlantic slope from Maine to Georgia and the southern Great Lakes drainages down to the Gulf of Mexico; it has been introduced widely across the continental United States and into Egypt, Great Britain, the Netherlands and Belgium. It is closely related to P. clarkii but paler-bodied with more elongated claws, and is an aggressive, predatory omnivore. The IUCN lists it as Least Concern, and as a hardy cambarid it breeds readily in freshwater with extended maternal care.
Sexing
As in other Procambarus, sex is read from the underside of the abdomen: mature males bear modified front swimmerets (gonopods) used in mating, while females have broader pleopods and a seminal receptacle. Confirming sex before pairing is the first step, and in this genus males often show the more elongated, robust claws.
Conditioning
Condition adults on a varied omnivorous diet in stable, oxygenated freshwater within the species' tolerated range, providing individual hides to curb aggression. Like its close relative the red swamp crayfish, well-fed mature adults reach breeding condition without special triggers, so the priority is steady water quality and enough cover to keep combative individuals apart.
Breeding Setup
Use a species tank of at least 80 litres with a soft substrate, ample caves and the opportunity to burrow, mirroring the burrowing habit of related cambarids. Keep the crayfish solo or species-only, as it preys on fish, shrimp and snails and damages plants. Because Procambarus crayfish are prolific and this species is already established outside its native range, breeding requires secure containment and a plan for the offspring.
Spawning & Berried Females
Following the cambarid pattern shared with P. clarkii, after mating the female attaches her eggs beneath the abdomen and broods them, typically retreating to a burrow. The berried female fans and protects the developing eggs, and the genus shows extended maternal care in which hatchlings remain attached to the mother before dispersing. There is no larval or brackish phase.
Shrimplet/Larval Care
Eggs hatch directly into miniature crayfish that cling to the mother's pleon before becoming free-living, with no salt stage required. Newly independent juveniles are cannibalistic and need abundant cover and individual space to limit losses. Feed small omnivorous foods and thin out or separate growing young as they begin to compete and fight.
Common Challenges
As with other Procambarus, the difficulty is managing rather than triggering reproduction: rapid growth, cannibalism and aggression drive losses and require space and cover. The predatory adults must be kept away from tankmates and plants. Given the species' wide introduced range, responsible containment and disposal of surplus animals are essential, and stock should never be released.