Aura Blue Shrimp Care Guide: Caridina Cantonensis Blue Morph

Among the ever-expanding catalogue of fancy Caridina shrimp, the aura blue stands out for its depth of colour — a rich, uniform blue that saturates under quality aquarium lighting and distinguishes it from the paler blue morphs common in the hobby. Classified as a colour variant of Caridina cantonensis, aura blue shrimp share the demanding water parameter requirements of the broader Taiwan Bee family. This aura blue shrimp care guide from Gensou Aquascaping at 5 Everton Park addresses those demands directly, giving you a clear framework for keeping and breeding this striking shrimp successfully.

Understanding Caridina Cantonensis Requirements

Caridina cantonensis and its many selectively bred variants — including the aura blue — originate from mountain streams in southern China where the water is exceptionally soft, cool, and slightly acidic. Replicating these conditions in a Singapore home aquarium requires active water management rather than the passive approach that works for Neocaridina species. The effort, however, is well rewarded: aura blue shrimp in optimal conditions display a vibrancy of colour that photographs barely capture.

Water Parameters

The target parameters for aura blue shrimp are non-negotiable if you want long-term success. Aim for temperature 20–24°C, pH 5.8–6.8, TDS 100–150 ppm, GH 3–5, and KH 0–1. These are significantly different from Singapore’s PUB tap water (GH 2–4, pH ~7.5, chloramine-treated) and require a remineralisation approach using RO water or a water purification unit.

RO water alone is too pure for shrimp — it lacks the minerals needed for moulting and general health. Remineralise with a Caridina-specific mineral supplement such as Salty Shrimp GH+, which raises GH without affecting KH, to bring TDS into the correct range. Monitor parameters with a TDS pen and API test kits weekly. In Singapore’s climate, a small aquarium fan or chiller is required to hold the tank below 25°C — ambient room temperatures frequently exceed this threshold.

Tank Setup

A 20–30 litre tank is adequate for a colony of 20–30 shrimp. Active substrate — specifically aquasoil products like ADA Amazonia, Fluval Stratum, or similar — is essential. These substrates buffer pH downward and release organic compounds that support the naturally acidic, tannin-influenced habitat these shrimp evolved in. Aquasoil has a lifespan of approximately 18–24 months before its buffering capacity depletes, at which point replacement or a substrate switch is required.

Plant the tank with mosses, Bucephalandra, Anubias nana petite, and fine-leaved stem plants. These provide biofilm grazing surfaces and shade that keeps parameters stable. Add Indian almond leaves and alder cones to introduce tannins and lower pH naturally while also providing food and shelter for the shrimp.

Filtration and Flow

Aura blue shrimp require clean, well-filtered water but are extremely sensitive to strong current. A sponge filter driven by a small air pump is the classic shrimp keeper’s solution — it provides biological filtration, gentle flow, and a biofilm-rich surface the shrimp graze on constantly. If using a canister filter, fit the intake with a sponge pre-filter to prevent shrimp and juveniles from being sucked in.

Avoid any sudden changes in water chemistry. The leading cause of mass shrimp death is osmotic shock from a rapid parameter shift — even a partial water change with slightly different TDS or pH can trigger it. Match replacement water parameters precisely to tank conditions before adding it.

Feeding

Caridina shrimp are primarily biofilm grazers. A heavily planted, mature tank with Indian almond leaves and driftwood will supply much of their nutritional needs naturally. Supplement two to three times per week with high-quality shrimp foods: biofilm wafers, blanched spinach or zucchini (remove after 24 hours), and occasional protein sources such as small amounts of frozen daphnia or specialty shrimp pellets.

Avoid overfeeding — uneaten food fouling the substrate is a primary water quality risk in shrimp tanks. Feed only what the colony consumes within two to four hours.

Breeding

Aura blue shrimp breed in the same manner as other Taiwan Bee variants. Females carry 20–30 eggs for approximately 28–30 days at 22°C — slightly longer than Neocaridina due to the lower temperature. Juveniles are miniature copies of the adults and require no special care beyond a well-established, stable tank environment.

Maintaining colour intensity across generations requires selective breeding — cull shrimp with pale or washed-out colouration from the breeding pool. Aura blue shrimp currently sell for $8–20 per specimen in Singapore depending on grade and colour depth, making a well-managed colony a worthwhile investment. For sourcing quality stock and specialist substrate, visit Gensou Aquascaping at 5 Everton Park.

Related Reading

• How to Breed Blue Bolt Shrimp: Taiwan Bee Colour Selection
• Blue Bolt Shrimp Care Guide: The Crown Jewel of Caridina
• How to Breed Blue Dream Shrimp: Neocaridina Colour Line Selection
• Blue Dream Shrimp vs Blue Velvet Shrimp: Grade and Colour Differences
• Blue Tiger Shrimp Care Guide: Orange Eyes and Blue Stripes