Chapalanus Dwarf Crayfish

Cambarellus chapalanus is endemic to the Lake Chapala basin in Jalisco, Mexico — one of Mexico's largest natural lakes — where it inhabits shallow weedy areas and littoral zones with abundant aquatic vegetation. It displays subtle olive and tan colouration with faint spotting, and like other Cambarellus remains compact at under 4 cm in length.

This species is of considerable conservation interest due to threats to its native Lake Chapala habitat from water extraction and pollution. In the aquarium hobby, captive populations help maintain the species outside its increasingly pressured natural range. Hobbyists keeping this species are encouraged to share information with their communities.

Care requirements are similar to other Cambarellus: moderately hard freshwater, fine substrate, and plant cover. It is more plant-safe than most crayfish and can be maintained in lightly planted aquaria alongside small peaceful community fish.

Water: 20–26°C, pH 7.0–8.0, GH 5–15, KH 2–10; Mexican lake-style moderately hard water. Tank: minimum 30 L, planted with robust species, fine substrate, caves and leaf litter. Feeding: omnivore — sinking pellets, spirulina wafers, blanched greens, occasional frozen protein. Breeding: female broods small clutch; juveniles independent; community breeding in planted tank. Compatibility: peaceful — safe with small community fish; may be predated by fish over 6 cm.