Amano Shrimp for Sale UK: Sizes & Buying Checks

The fastest safe route to buying Amano Shrimp is to separate what is live now from what remains true over time. The exact Amano Shrimp product page is currently titled 1–5 cm and exposes its selectable Caridina multidentata options live. Open that record for today's available option, unit, price, stock, current image and checkout. Use this page to decide whether the identity, size and group suit your aquarium before you buy.

Buy the exact Amano product, not a mixed shrimp result

“Amano Shrimp”, “Japanese shrimp” and “algae shrimp” can all appear in UK searches, but the accepted name is Caridina multidentata Stimpson, 1860. The taxonomic revision treats Caridina japonica as a synonym, and current GBIF and DecaNet records independently use C. multidentata^[1][2][3].

That scientific name is the first screen, not the final proof. A translucent body or a familiar common name cannot establish a retail animal's source, lineage, sex, age or health. The revised live grid on this page is intentionally limited to the exact Amano record instead of mixing in Cherry Shrimp, coloured shrimp, algae-eating fish or snails.

If you want to browse beyond this species, use the wider Shrimp & Crustaceans shop. If you want red, blue, yellow or rili forms, use the Cherry Shrimp types comparison; those Neocaridina colour labels should not be presented as Amano variants.

How to read the 1–5 cm size range

The live Amano product currently uses “1–5 cm” in its title^[13]. Three distinctions prevent a useful size signal from becoming misleading:

1. Sale size is not adult size. It describes the selectable animal at dispatch; OATA describes Amano Shrimp as reaching about 5 cm^[7].
2. A range is not permanent availability. A size can be unavailable while the product or another size remains live.
3. Length is not quantity. Confirm whether a selector means one animal, a pack or another unit before comparing the price.

The best size is therefore not automatically the largest or cheapest. Think about present tank mates, hiding cover, feeding access and the difference between the seller's holding water and your mature aquarium. A smaller shrimp may be more vulnerable to predation; a larger shrimp still needs a suitable group and environment. Neither point creates a universal size rule.

Price and stock: keep the answer live

Searchers reasonably ask “how much is an Amano Shrimp?”, but a copied price becomes wrong as soon as the selected size, offer or stock changes. The product card above and the final basket are the live commercial evidence. This guide does not freeze an April or September price into evergreen text.

Compare like with like:

Do not interpret the editorial illustrations on this page as stock photography. Their purpose is to make the normal wild-type form recognisable at mobile size. The current product record owns the live commercial representation.

Plan a group without inventing a litre formula

OATA's UK freshwater shrimp and snail guide says shrimp are usually social and recommends groups of at least five. It gives about 20 litres as a broad starting point for larger species such as Amano Shrimp, with more space when fish are present^[7]. That is useful buyer screening, but it is not a controlled C. multidentata minimum and does not support “one shrimp per 8 litres” or any other universal density.

A responsible capacity check includes:

• a biologically mature filter and stable measured water;
• enough accessible surfaces and cover for the whole group;
• oxygenation and maintenance capacity;
• adult dimensions and behaviour of every companion;
• supplementary feeding without chronic excess;
• a secure top and protected filter intakes where appropriate;
• a separation plan if predation, competition or health problems appear.

Buying five merely to satisfy a number is not responsible if the aquarium cannot support them. Equally, a large aquarium is not automatically ready if its filter is immature or its fish are likely to hunt shrimp. The Amano Shrimp care guide provides the full evidence-bounded husbandry decision; this page keeps the checkout decision short.

Match measured UK water, not a postcode stereotype

OATA gives broad group guidance of 17–27°C, pH 6.5–8.0 and 4–18 dGH, with ammonia and nitrite at zero^[7]. These are not experimentally established exact-species tolerance limits, and they should not be turned into one perfect number.

UK tap-water hardness varies with source and geology, so a city name or postcode stereotype cannot tell you what is in the aquarium^[9]. Test the prepared tank and ask for current holding-water information. The practical question is whether the move can be managed without abrupt, poorly measured change—not whether two broad ranges overlap on paper.

Use the water chemistry guide if GH, KH, pH, ammonia, nitrite or source-water treatment is unfamiliar. A water-company report describes the supply; it does not replace an aquarium test taken under current conditions.

Algae grazing is useful, not a performance guarantee

Amano Shrimp are bought partly because they graze aquarium surfaces. OATA also recommends appropriate supplementary foods and warns against overfeeding^[7]. Those two facts belong together.

No animal can be promised to remove every algae type or correct excess light, nutrients, unstable carbon, poor maintenance or an incorrectly identified growth. Before buying a “clean-up crew”, identify the material and correct its cause. After buying, watch whether each shrimp can access food; a visually clean aquarium is not proof that the group has enough to eat.

The third illustration shows shrimp on leaf, wood and stone only as an observational context. It does not certify what is being consumed or the rate of any result.

Compatibility: assume predation is possible

OATA cautions that common aquarium fish may eat freshwater shrimp and advises species-specific checking before mixing them^[7]. That is safer than a list of fish declared compatible forever.

Screen the actual combination for:

• adult mouth size and hunting behaviour;
• territorial or bottom-foraging behaviour;
• dense cover that remains accessible after moulting;
• feeding competition and night-time behaviour;
• filter-intake and escape risks;
• enough total space for the adult community.

Do not infer safety from one peaceful shop-tank moment. Newly introduced, smaller or freshly moulted shrimp can present a different risk. If the shrimp are the priority, a shrimp-focused aquarium removes much of the uncertainty.

Freshwater adults, saline larval research

Amano adults live in freshwater, but their life cycle is amphidromous. A controlled 2021 study tested C. multidentata larvae across temperatures and salinities and recorded development under saline treatments^[4]. A 2024 experiment separately measured reproductive outcomes at 20, 23 and 26°C^[5].

These studies explain why an egg-carrying adult does not mean a self-sustaining freshwater colony. They do not justify copying one laboratory salinity, temperature or feeding schedule as a guaranteed home method. If effortless freshwater reproduction is the buying goal, compare the exact needs of Cherry Shrimp instead.

Treatments and copper: check the exact product

OATA warns that freshwater shrimp are sensitive to copper. A recent C. multidentata experiment also found conditional physiological and behavioural effects, but it does not produce a universal household “safe” concentration^[6].

Never improvise a reduced fish-medicine dose or assume “natural” means safe. Read the exact current label and authorised particulars; the VMD database exists because directions and warnings are product-specific^[10]. If shrimp become inactive, discoloured, damaged or stop feeding, test water and obtain qualified advice rather than diagnosing from one sign.

Arrival and responsible ownership

Prepare the mature aquarium before ordering. OATA's general freshwater guidance prioritises controlled transport, suitable measured water and observation, while the English seller guidance includes aquatic environmental monitoring and buyer information^[8][11]. Neither source proves a claim about one shipment or creates one fixed acclimation timer for every difference in water.

On arrival, check the order identity and count, packaging condition, animal condition and the seller's current written instructions. Preserve photographs, measurements and timestamps if something is wrong, then contact the seller promptly. The contact or correction form is customer support—not an ecommerce lead or purchase outcome.

Finally, never release shrimp, plants, aquarium water or equipment contents into the wild or a drain that can reach natural water. The GB Non-native Species Secretariat's pet code explains the wider biosecurity reason^[12].

The final checkout decision

Buy only when all six answers are clear:

1. The live record identifies the animal as Caridina multidentata.
2. You understand the selected sale size and sale unit.
3. The live price and availability still match the basket.
4. A suitable group fits the mature aquarium without a per-litre shortcut.
5. Measured water, cover, filtration and companions have been checked.
6. You have read the seller's current delivery, arrival and support information.

If any answer is uncertain, keep the item out of checkout until it is resolved. A precise buying pause protects the animals and produces a better customer result than a fast click based on an algae promise.