Caridina cantonensis care
Caridina cantonensis
Caridina cantonensis is a small freshwater shrimp in the family Atyidae. Its original scientific description was published in 1938. Aquarium trade names such as bee shrimp, crystal shrimp and colour varieties are not always used consistently. Closely related species, including C. logemanni, were described separately later; a colour pattern or seller label therefore does not confirm exact identity. This guide concerns C. cantonensis and keeps that uncertainty visible. Water values come from specialist care profiles rather than controlled tolerance trials. Provide a mature, stable aquarium and keep a group. A precise minimum tank volume is not sufficiently supported. Small shrimp and juveniles are vulnerable to fish able to swallow them.
Plan your aquarium →At a glance
- Temperature
- 15–25 °C
- pH
- 6.0–7.0
- Diet
- Omnivore
- Adult size
- Up to 3 cm
- Temperament
- Peaceful
About this species
Yü described Caridina cantonensis in 1938 from specimens collected in a mountain stream near Canton, China. Later taxonomic studies described several ornamental shrimp from the trade as separate species, including C. logemanni. Names such as bee shrimp, crystal red and Taiwan bee are not always used taxonomically precisely. Choose animals only when the supplier can support the scientific identity and breeding line. Colour and grade are not a species diagnosis. Husbandry information mainly comes from specialist care profiles and freshwater-shrimp guidance.Natural habitat
The original description gives a mountain stream near Canton as the locality for the examined material. This is a historical type locality, not a complete modern distribution survey. The paper describes taxonomy, not aquarium tolerances. Do not infer exact temperature, pH or hardness from the place name. In an aquarium, stable water quality, oxygen and biofilm-rich surfaces matter. Establish a mature aquarium before adding shrimp. Clean wet equipment and plants appropriately to reduce transfer of disease or unwanted organisms between tanks.Aquarium and layout
No reliable species-specific minimum in litres has been established. OATA recommends groups of at least five freshwater shrimp; for this small group-living shrimp, a mature, cycled aquarium matters more than an arbitrary minimum number. Use a sponge filter or protect the filter intake from juveniles. Provide moss, leaves, wood or other grazing surfaces without overfeeding the tank. Avoid a newly started or unstable aquarium. Change water conditions gradually and match new water to the established breeding line. A calm group uses cover while grazing and moulting.Water conditions
A specialist care profile gives 15–25 °C and pH 6–7; it reports a commonly used GH of 4–6 but notes that values depend on the breeder’s stock. These are husbandry recommendations, not experimentally established limits. B-Aqua gives pH 6–7 as a husbandry range; this is not an experimentally established tolerance limit. An exact KH target is not sufficiently supported. Stability is essential: avoid rapid shifts in temperature, mineral content and conductivity. Use water with known values and avoid copper treatments unless confirmed shrimp-safe. Test new setups and add shrimp only to a mature aquarium.Behaviour and group size
Caridina cantonensis is kept as a peaceful group shrimp. It grazes on biofilm, algae and food particles on surfaces. Fish able to swallow a shrimp or juvenile pose a predation risk; cover may reduce exposure but cannot guarantee an unsafe pairing is safe. Keep several shrimp together and watch moulting, feeding and activity. Trade forms may include different species. Do not mix lines or related species without understanding their identity and whether they are appropriate to keep together for breeding.Feeding
The shrimp constantly graze on biofilm and algae, which are important foods in a mature aquarium. Supplement with small amounts of suitable shrimp food and varied plant matter. OATA advises feeding freshwater shrimp sparingly and warns that excess food can damage water quality. Check that no food remains uneaten. The central product catalogue was checked read-only; no product was sufficiently verified by ingredients, particle size and exact species suitability. No product is therefore linked.Breeding
OATA reports that colour varieties sold as C. cantonensis can reproduce in freshwater when sufficient cover and food for juveniles are available. This is general guidance for trade lines; it does not taxonomically confirm every shrimp sold as a bee shrimp. Females carry eggs beneath the abdomen. Protect juveniles from filter intakes and provide fine cover and biofilm. We do not state fixed clutch sizes or hatch times because evidence for the exact line is not established. Keep breeding groups stable and avoid unintended crosses.Keeping with fish
Discouraged. Neon tetras may eat small shrimp or juveniles. This assessment follows general shrimp-care guidance advising against fish that can swallow shrimp. No controlled trial of this exact species pairing was found.
Keeping with other invertebrates
Conditional. Java fern (Microsorum pteropus) can be attached to wood or stone and provides structure and a surface for biofilm. This is a general setup suggestion; the exact species pairing has not been experimentally tested.
Exoskeleton, shell and minerals
Shrimp moult as they grow and are more vulnerable around the moult. Provide stable water, adequate cover and a calm aquarium. Leave a shed shell if it is not harming water quality; it may be eaten. Do not remove minerals or add supplements at random. If several shrimp have moulting problems, first check temperature, water quality, conductivity and possible copper sources.Possible problems
The main risks are unstable water, copper-based treatments, overfeeding, fish predation and mistaken identification from colour or trade names. Bee shrimp in commerce may represent several closely related species. Ask for a scientific identity and breeding-line information. A mature, stable aquarium is important; do not place shrimp straight into a newly started system. Never release animals, aquarium water or wet plants into nature.Keeping with other species
Neon tetra
Not recommendedDiscouraged as a default: neon tetras may eat small shrimp or juveniles. This is a general size/predation assessment, not a controlled pairing trial.
View species profile →Suitable plants
Java fern
Conditional: Java fern attached to wood or stone provides structure and a biofilm surface. This is general setup advice, not a tested species pairing.
- Light
- Low, Moderate
- CO₂
- CO₂ injection not needed
Sources & review
This care guide draws on several specialist sources and was last checked on .