Neocaridina zhangjiajiensis

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Neocaridina zhangjiajiensis, also called Snowball White, is a small freshwater shrimp valued for its opaque white coloration and peaceful behavior. This form remains very rare in the aquarium trade, making it an appealing choice for aquarists who keep ornamental invertebrates. It spends much of its time grazing on biofilm-covered surfaces, then moves calmly among plants and mosses. Like other shrimp in the genus Neocaridina, it requires stable, well-oxygenated water free of copper. Breeding is possible in a mature aquarium when maintenance is consistent and suitable shelters are available for young shrimp.

General species description

Neocaridina zhangjiajiensis is a small freshwater shrimp in the family Atyidae. In the aquarium trade, it is best known as Snowball White, a name describing its pale body and snowball-like appearance. It usually lives on decorations, plants and substrate, where it continuously searches for food particles and biofilm. Its behavior is generally peaceful and social, so keeping a small group is preferable. Its main challenge is not its size but its sensitivity to rapid changes in temperature, pH, hardness and nitrogen compounds. Stable aquarium conditions are therefore more important than pursuing extreme values. This shrimp is very rare in regular commercial availability.

Geographical origin and biotope

Country of reference: China. The scientific name links this shrimp with Zhangjiajie in Hunan Province. Its native environment is associated with inland freshwater habitats featuring low to moderate flow, rocky surfaces, submerged leaves, wood and abundant vegetation along the banks. In an aquarium, these conditions can be approximated with mosses, fine-leaved plants and several shelters. Gentle filtration, good oxygenation and limited waste accumulation suit its lifestyle better than strong current. The layout should provide many grazing surfaces and protected areas for juveniles, especially around moss and leaf litter.

Specific location and local name

The geographical reference associated with Neocaridina zhangjiajiensis is Zhangjiajie, Hunan, China. A Chinese local name is not used here as a standard aquarium designation; in international trade, Snowball White remains the most recognizable name. In English-speaking aquariums, it may simply be called the white Snowball shrimp. This trade name describes the color form rather than a universally standardized vernacular name. To avoid confusion with white strains of Neocaridina davidi, it is best to retain the complete scientific name when purchasing, breeding or exchanging specimens.

Appearance and physical characteristics

The body of Neocaridina zhangjiajiensis is small, slightly curved and protected by a segmented exoskeleton. Its most distinctive feature is its opaque white color, which may cover the body and carapace with varying intensity. The antennae, walking legs and swimming appendages are delicate and remain active as the shrimp explores its surroundings. As with other shrimp in the genus, color density may vary with age, stress, lighting and background. Adult females commonly have a broader abdomen. Maximum adult size is about 2.5 cm, while males are usually smaller and slimmer.

General diet

Neocaridina zhangjiajiensis naturally grazes on biofilm, microalgae, bacteria and organic debris found on aquarium surfaces. In a mature aquarium, this natural food is important, but it may not support a large group by itself. Offer small portions of shrimp food, suitable dried leaves and blanched vegetables. Meals should remain modest to prevent water quality from deteriorating. After molting, individuals seek quiet areas and benefit from available minerals in the water and diet. Removing uneaten food after a few hours helps maintain clean conditions and reduces the risk of bacterial or fungal problems.

Essential data

• Name of original river: No specific river name is associated here with Zhangjiajie.
• Local name used: Snowball White in the aquarium trade.
• Origin of the scientific name: Neocaridina identifies the genus; zhangjiajiensis refers to Zhangjiajie.
• Etymology of the full name: Neocaridina means new Caridina; zhangjiajiensis means from Zhangjiajie.
• Common/vernacular names: Snowball White, white Snowball shrimp.
• Family: Atyidae
• Subfamily: Atyinae
• Name pronunciation: nee-oh-karr-id-ee-na jang-jah-jee-en-sis
• Discovery: Werner Klotz and Thomas von Rintelen, 2014.
• Maximum adult size: about 2.5 cm.
• Water temperature and pH: about 20–28 °C; pH 6.5–8.0.
• Appearance of the watercourse and surrounding vegetation: freshwater habitat with rocky or debris-covered surfaces, bank vegetation and abundant biofilm-growing areas.
• Typical tankmates: Boraras brigittae, Microdevario kubotai, Tanichthys albonubes, Caridina cantonensis.
• Temperament and behavior: peaceful, active on surfaces, generally social and not strongly territorial.
• Water depth: shallow to moderate areas accessible to small shrimp.
• Sexual dimorphism: females are broader and often more robust; males are smaller and more slender.
• Bottom structure and flow: bottom with mineral surfaces, leaves and organic debris; low to moderate current.

For greater success

Success with Neocaridina zhangjiajiensis depends on a mature aquarium, stable water and a layout rich in moss, leaves and shelters. A protected filter intake prevents juveniles from being drawn in, while slow acclimation reduces osmotic shock. Avoid copper, harsh treatments and predatory tankmates. Light feeding, good oxygenation and regular water changes support molting and reproduction. Because this line is very rare, preserving healthy breeders is especially worthwhile. Maintaining a sufficiently large population also helps protect its distinctive white coloration over successive generations.