Hong Kong Caridina care guide
Hong Kong Caridina (Caridina serrata) — minimum tank 30 L, temperature 18-26 °C, pH 6.5-7.5.
Compiled by Aquairi from published sources · Published · Updated
Overview
Hong Kong Caridina (Caridina serrata) is a freshwater dwarf shrimp of the Caridina cantonensis bee-shrimp complex of the family Atyidae, listed in the Aquairi knowledge base as an intermediate-level species. Wild Caridina from Hong Kong streams, ancestor of many bee/tiger lines. Rarely kept pure but valuable for breeders.
Taxonomy
- Family: Atyidae
- Genus: Caridina
- Scientific name: Caridina serrata
- Common synonyms: Hong Kong Wild Shrimp
Habitat
The wild ancestor Caridina cantonensis (Caridina serrata complex) is native to montane streams of southern China and Hong Kong, where it occupies soft, slightly acidic, well-oxygenated water above shaded leaf litter. Selectively bred bee-shrimp lines descend from this complex and have been intensively cultivated in Japan and Taiwan since the 1990s. The Aquairi knowledge base records this entry from: Hong Kong.
Tank requirements
- Minimum tank volume: 30 L (7.9 US gal)
- Adult size: 2-3 cm
- Temperature: 18-26 °C (64-79 °F)
- pH: 6.5-7.5
- GH: 4-10 °dGH
- KH: 1-6 °dKH
- Lifespan: 1-2 years
Diet
A grazing detritivore. In the aquarium the animal continuously feeds on biofilm, soft algae, decaying plant matter and dropped food. A small daily ration of a shrimp-formulated sinking pellet, occasional blanched spinach or zucchini and rare protein wafers keep the colony in good condition without polluting the water.
Compatibility
Peaceful and best kept in a colony of ten or more in a stable, well-cycled, planted aquarium. Suitable tank mates listed in the Aquairi knowledge base: Otocinclus, Pygmy Cory. Should be kept away from: Crayfish.
Breeding
Reproduces in fresh water without a planktonic larval stage. Mature females develop ripe ovaries visible as a yellow or olive "saddle" on the back; after a successful moult they are fertilised by the male and carry fertilised eggs under the pleopods for roughly three to four weeks before juveniles hatch as miniature fully-formed individuals. Stable parameters and absence of predation are the main success factors.
Tangerine Tiger Shrimp Breeding Guide
Overview
The Tangerine Tiger is a soft-orange tiger-striped Caridina serrata. The Shrimp Farm describes it as easier to keep than most tiger shrimp, tolerating a wider range of water parameters and making it a comparatively forgiving Caridina to breed. Like other Caridina, its young hatch as miniature adults with no larval stage.
Its hardiness and rapid colony growth set it apart from the demanding Crystal and Taiwan Bee lines.
Sexing
Females are larger and develop a deeper abdomen to carry eggs. In a healthy colony, The Shrimp Farm notes that females are almost constantly berried, which makes identifying them straightforward.
Conditioning
Provide a filtered, fully cycled tank with a neutral to slightly acidic pH. The Shrimp Farm recommends a temperature of 22-25.5 °C (72-78 °F). A varied diet of biofilm, algae and prepared shrimp food keeps the colony breeding readily.
- Cycled tank with gentle, guarded filtration
- Neutral to slightly acidic pH; wide tolerance
- Light daily feeding to support frequent broods
Breeding Setup
Because it adapts to a wide parameter range, the Tangerine Tiger does not need the strict low-TDS soft water of the bee lines. The Shrimp Farm advises that it can interbreed with other Caridina, so it should be kept away from species like Crystal Reds unless hybridising is intended. A single-species tank gives the cleanest line.
Spawning & Berried Females
Once fertilised, The Shrimp Farm states the female carries the eggs and becomes berried for approximately 2-4 weeks before they hatch. Healthy females breed quickly and almost continuously, allowing a large colony to build rapidly.
Shrimplet/Larval Care
The Shrimp Farm confirms the eggs produce tiny versions of the adults that do not go through a larval stage. Shrimplets are independent from hatching and graze on biofilm, so a mature tank is all that is required to raise them.
Common Challenges
The Tangerine Tiger is relatively trouble-free, so the main concern is unintended hybridisation. The Shrimp Farm warns it readily interbreeds with other Caridina, so mixed Caridina tanks can lose the distinct tangerine colour over generations.