Deluxe Neocaridina Shrimp Mix (Neocaridina davidi)

Choose a colourful grazing shrimp

The Deluxe Neocaridina Shrimp Mix is a selection of colour forms of Neocaridina davidi, a freshwater shrimp in the family Atyidae. It is native to lakes, ponds, rivers and streams in Taiwan, east of China, the Korean Peninsula and Vietnam, and reaches approximately 4 cm. This mix suits a keeper who enjoys watching shrimp graze and is prepared to maintain measured, stable water in a mature, filtered aquarium. Our care assessment is intermediate: the shrimp is small and peaceful, but its filter, water quality, food access and exposure to fish all need deliberate management.

The current World Register of Marine Species entry recognises this scientific name and its classification in Atyidae. Older aquarium labels may use Neocaridina heteropoda, but Neocaridina davidi is the accepted name used here.

The species summary for Neocaridina davidi describes an omnivorous shrimp whose wild-type colour is mottled brown. Selective breeding has produced red, orange, yellow, green, blue, violet, white and clear forms, explaining the visual variety associated with this mix.

A mature planted aquarium can provide cover and a large choice of grazing surfaces without turning care into a complicated equipment exercise. Its compact adult size does not remove the need for mature filtration, feeding space or a protected filter intake. The reliable starting point is a stable aquarium planned for a social group, not a newly filled container chosen only because the animal is small.

Understand the animal you purchase

One purchase supplies one shrimp. Plan equipment, cover and companions around the approximately 4 cm mature length.

The word “mix” means the offer can represent more than one selectively bred colour form. It is not a promise of a particular shade, pattern, lineage or breeding outcome. If one named colour is important to your plans, use the cherry shrimp collection to compare clearly identified alternatives before choosing.

Sex is guaranteed only when the selected option explicitly states male or female. This Deluxe Neocaridina Shrimp Mix listing has no sex-guaranteed option.

The gallery images are representative, based on reference photographs of this species, so colours can look slightly different from the live animal.

Some gallery scenes show two shrimp because they illustrate form, colour and behaviour. They do not alter the purchase unit of one animal. Use the quantity control to build the intended group.

Start with the decisive care numbers

OATA’s freshwater shrimp and snail guidance gives 17–27°C, pH 6.5–8.0 and 4–18 dGH for the group as planning values rather than a species-specific optimum. It also calls for zero ammonia, zero nitrite and nitrate no more than 20 mg/l above the normal tap-water level. Favour gradual changes over repeated adjustment towards one exact point.

Our complete Cherry Shrimp Care Guide uses a mature, filtered 20-litre aquarium as a cautious starting policy for a small group. OATA’s general screen begins at 10 litres, but the extra volume gives more room for filtration, feeding, equipment and water stability. Neither figure creates a permanent shrimp-per-litre formula. Increase the plan when fish or other livestock share the aquarium.

Social shrimp should generally be kept in a group of at least five. Because one purchase supplies one animal, set the quantity from the intended starting group and account for animals already living in the aquarium. The group still needs enough established grazing area for every shrimp to reach food without crowding.

These numbers work together. A reading inside the range cannot compensate for an immature filter, inaccessible food, an exposed intake or fish that hunt shrimp.

Build around mature filtration and cover

Prepare the aquarium before the shrimp arrives. “Mature” describes a functioning biological system rather than a fixed number of days: the filter must process the planned load, and tests must continue to show zero ammonia and zero nitrite. The RSPCA’s aquarium filtration guidance explains that beneficial bacteria in a working filter convert toxic ammonia to nitrite and then to the safer nitrate.

If this is your first invertebrate aquarium, follow our guide to preparing and maturing a shrimp aquarium before choosing livestock. Do not use clear water, elapsed time or visible algae as substitutes for test results. A tank can look clean while its biological filter is still unable to process additional waste.

Give every shrimp usable surfaces

Provide aquarium gravel or sand, plants and suitable ornaments or structure. Established wood, rock, plant leaves and other aquarium-safe surfaces increase the area over which shrimp can graze. Arrange cover at more than one point so an animal does not have to cross a completely exposed aquarium to feed or rest.

Live plants are useful cover, but they are not compulsory. OATA also permits plastic plants and suitable ornaments where live planting is not used. Keep enough open access to inspect the shrimp, remove recurring waste and check equipment without dismantling the entire layout.

Protect the filter inlet

A filter is essential, but an unguarded intake can create a physical risk for small shrimp and juveniles. Fit a fine guard or suitable sponge wherever an intake could trap them. Check that protection during routine maintenance because gaps, displaced guards and clogged sponge can change both safety and flow.

Use the aquarium’s real water volume after substrate, wood and equipment when assessing space. For example, a nominal 20-litre aquarium holding less water once decorated has less headroom than its label suggests. If fish share the system, plan above the 20-litre starting point because their adult size, feeding and waste also draw on the same filtration capacity.

• Before stocking: confirm zero ammonia and nitrite with measured tests.
• At the intake: fit and inspect a shrimp-safe guard.
• Across the aquarium: distribute cover and established grazing surfaces.
• At the front: retain a clear area for observation and feeding checks.

Match measured water and keep it steady

Measure the aquarium rather than assuming that local tap water, a season or a postcode predicts its chemistry. Temperature, pH and hardness can change through substrate, rock, top-ups and treatment. Our water chemistry guide explains what each reading means, while the water matcher helps compare measured aquarium values with the 17–27°C, pH 6.5–8.0 and 4–18 dGH planning ranges.

Choose stability inside the range

Do not chase the midpoint by making repeated corrections. A stable aquarium at an appropriate point in the range is a better starting position than one moving rapidly between readings. Compare temperature, pH and hardness before transfer, then make any necessary adjustment gradually.

Use a heater only when measured room and aquarium temperatures cannot remain within the stable range selected for the animals. A cool room may need a correctly sized, guarded, thermostatically controlled heater. A warm room needs an overheating plan instead of automatic heating. Check the temperature at different times when room conditions change.

Respond to each test result

Nitrate should not exceed 20 mg/l above the normal tap-water level. Compare aquarium and conditioned replacement water rather than treating one isolated reading as the whole diagnosis.

Change one controllable factor at a time and record the result. If several products, foods or maintenance routines change together, it becomes difficult to identify which action improved or worsened the aquarium. Consistent measurements also make later compatibility and health decisions much clearer.

Feed the grazers without fouling water

Neocaridina davidi is omnivorous in nature, while aquarium shrimp spend much of their time grazing algae and biofilm from established surfaces. Grazing behaviour does not mean that visible algae forms a complete diet or that shrimp will control every nuisance growth. Use an appropriate complete shrimp food as the nutritional base.

OATA’s group feeding routine is two or three feeds per week. Algae wafers and commercial shrimp pellets are suitable choices for grazing freshwater shrimp. Begin with a small portion that the group can access, allow at least 30 minutes for feeding and remove recurring excess before it decays. Adjust the next portion from what you observe rather than increasing food automatically.

Judge the portion from the aquarium

• Food disappears immediately: check whether every shrimp reached it before increasing the next portion.
• Food remains repeatedly: remove the excess and reduce the next feed.
• One area is crowded: divide the portion between accessible feeding points.
• Fish take the food first: revise placement and reassess feeding competition.
• Test results worsen after feeding: reduce waste and review filtration before adding more food.

A newly arranged aquarium may contain fewer established grazing surfaces than an older planted system, so observe access between prepared feeds. Conversely, visible biofilm does not justify neglecting a complete food. The aim is to support natural grazing while controlling the amount of manufactured food that can break down.

Population changes also alter demand. Five shrimp, a larger established group and a group producing juveniles do not use the same feeding area. Reassess portions when the number or size of animals changes rather than relying permanently on the first routine.

Reduced interest in food can be an early warning when it appears alongside inactivity, hiding, altered colour or unusual breathing effort. Test water and inspect equipment before trying to tempt the shrimp by adding several extra foods, because excess left in the aquarium adds another water-quality problem.

Maintain the aquarium in small, regular steps

At least once every week, carry out a partial water change of 25%. Treat replacement tap water with a conditioner that removes chlorine or chloramine before it enters the aquarium. Match conditions carefully and add the new water without creating an abrupt change for the shrimp.

Test ammonia and nitrite at least weekly, and track nitrate, temperature, pH and hardness in context. The OATA freshwater aquarium guidance supports cycling, regular testing and gradual stocking. Continue testing after the aquarium appears settled because feeding, new animals, blocked equipment and maintenance can change the biological load.

Clean without stripping the filter

Check the filter for blockages during maintenance. If its media needs cleaning, rinse it lightly in aquarium water removed during the partial water change. Do not run it under the tap because chlorine or chloramine may damage the beneficial bacteria that process waste.

Siphon visible solid waste where it accumulates, but retain established grazing structure and avoid turning every water change into a complete rebuild. Cleaning all surfaces and filter media aggressively at the same time removes stability and makes the effect of maintenance harder to judge.

Use a repeatable weekly sequence

1. Observe activity, colour, feeding response and the position of each shrimp.
2. Measure temperature, ammonia and nitrite before disturbing the aquarium.
3. Record nitrate, pH and hardness at a consistent point in the routine.
4. Remove 25% of the water while siphoning accessible solid waste.
5. Inspect the intake guard, flow and filter for blockage.
6. Condition and match replacement water before adding it gradually.
7. Recheck equipment and observe the group after the aquarium settles.

During the first month after adding shrimp, keep the same schedule and compare each result with the previous week. A rising trend can reveal increasing feeding pressure or reduced filter flow before livestock shows severe signs. Add further animals slowly so the biological filter can adjust as waste and feeding increase.

Acclimatise slowly and protect the display

Arrange for someone to receive the parcel so live animals are not left unattended. Read the current delivery and Live Arrival Guarantee policy before the delivery date, including its claim requirements and unpacking guidance.

Follow the arrival sequence

1. Receive the parcel in person.
2. Before opening it, start filming continuously with the parcel still sealed and the outer box visible.
3. Open the parcel in the same continuous take and show the shrimp still inside the sealed bag before anything is disturbed.
4. Float the bag for 20–30 minutes before releasing the shrimp.
5. Release the shrimp without pouring the bag water into the aquarium.

Check the aquarium separately

OATA’s shrimp guidance calls for zero ammonia and zero nitrite before livestock is added. Confirm those readings, check that the filter is running and make sure the intake guard remains secure.

Watch the first day without overreacting

After release, check that the shrimp can stand, move and reach cover. A newly transferred animal may use shelter, so judge it alongside water readings and changes over time rather than treating one moment of hiding as a diagnosis. Keep prepared food modest while observing whether grazing begins.

Do not add several more animals immediately. Gradual stocking gives the beneficial bacterial population time to respond when waste and feeding increase. It also makes it easier to connect any change in water readings with a particular addition.

Set first-week checkpoints

Use dedicated wet equipment where practical and keep transport water out of the display. Never release shrimp, aquarium water, plants or equipment contents into the wild.

Respond to health changes with measurements

Learn the group’s normal activity, colour and feeding response so a change is easier to recognise. Warning signs include increased inactivity, restlessness, unusual movement, greater hiding, darker or paler colour, altered breathing effort, white spots, lesions, abnormal growths, exoskeleton damage, missing appendages, swelling, weight change or reduced interest in food.

An empty exoskeleton can resemble a dead shrimp, and hiding can occur around moulting. Neither observation alone identifies a health problem. Check the animal count, compare the rest of the group and measure the aquarium before choosing a response.

Use the same diagnostic order

1. Measure temperature, ammonia and nitrite immediately.
2. Review nitrate, pH and hardness against recent readings.
3. Check filter flow, intake protection, aeration and heating.
4. Review recent maintenance, new livestock, plants, decor, food, aerosols and treatments.
5. Compare the affected shrimp with the rest of the group.
6. Record clear photographs and the timing of each change.

If signs persist, become severe or affect several animals, contact us about the health change and seek suitably qualified veterinary help where appropriate. Do not combine several treatments while water quality or equipment faults remain unexplored.

Treat medicines as an invertebrate safety decision

Freshwater shrimp are highly sensitive to copper and will die if exposed even to low levels. Read the exact current label and every invertebrate warning before adding any medicine, algae treatment, plant product or other chemical to the aquarium. Do not assume that a product intended for fish is safe for shrimp.

Identify the problem before treating it. Similar-looking marks or changes can have different causes, so automatic medication may expose the whole aquarium without addressing the cause. When product compatibility is unclear, keep the treatment out of the shrimp aquarium until suitable advice has been obtained.

Prevention rests on the routine already described: mature filtration, zero ammonia and nitrite, gradual stocking, controlled feeding, regular partial water changes and inspection of new additions. These actions reduce avoidable stress without promising immunity from disease or moulting problems.

Screen every companion by predation risk

These shrimp are peaceful, but peaceful behaviour does not make them safe from tank mates. Avoid fish able to fit the shrimp in their mouth and species known to be predatory. Apply that screen to the companion’s adult size and behaviour, not only to a juvenile fish seen at the time of purchase.

No fish is guaranteed safe with newly hatched shrimp. A fish that appears to ignore an adult may still take juveniles, compete for prepared food or change behaviour when it grows. Compatibility therefore remains conditional even when water requirements overlap.

Check the complete adult community

• Mouth size: could the adult companion swallow an adult shrimp or a juvenile?
• Hunting behaviour: does it search plants, wood or substrate for small animals?
• Territorial behaviour: could it exclude shrimp from cover or feeding areas?
• Feeding speed: will shrimp reach complete food before it is taken?
• Water overlap: can every animal share the chosen temperature, pH and hardness?
• Cover: will sheltered areas remain after plants are trimmed and decor is cleaned?
• Goal: is the aquarium for display coexistence or maximum juvenile survival?

Use a separation plan if behaviour changes. One peaceful interaction cannot guarantee future safety, particularly after growth, territorial change, moulting or the appearance of juveniles.

A shrimp-only aquarium removes fish predation and feeding competition from fish, but it does not remove crowding, filtration, equipment, food or water-quality risks. It is the clearer choice when juvenile survival is the main goal, provided the group still receives complete food, protected filtration and regular maintenance.

For a stocking and compatibility assessment, ask us with the aquarium volume, measured water values, full species list, adult sizes and the number of each animal. That information allows the adult community to be screened as a whole instead of treating one proposed pairing in isolation.

Plan the group around your long-term goal

Keep social shrimp in a group of at least five. Because the purchase unit is one animal, choose the quantity needed to reach the intended group after counting any correctly identified Neocaridina davidi already in the aquarium. Do not use the minimum group figure as a density formula for filling every litre.

Start with the purpose of the aquarium. A mixed-colour display, a single-colour line and a shrimp-only nursery lead to different decisions about companions, cover and future separation. Writing down that goal before purchase prevents a display choice from being mistaken for a guaranteed breeding plan.

For a mixed-colour display

Expect colour variation and enjoy each shrimp as an individual selection from the mix. Do not expect offspring to preserve one named colour. If future colour consistency matters, a mixed selection is a poor starting point for that particular goal.

For a community display

Plan above the cautious 20-litre starting point and include every adult animal in the space and filtration assessment. Provide more than one feeding and cover area, then watch whether shrimp can graze without being chased or displaced. A community can appear calm while fish are small and change as they mature.

For juvenile survival

A shrimp-only aquarium removes fish predation, while established surfaces, dense usable cover and a protected intake address other early risks. Females carry eggs externally beneath the abdomen, and young hatch as benthic juveniles rather than passing through the prolonged saline larval stage associated with Amano Shrimp. That biology does not guarantee a surviving colony or a particular growth rate.

Reassess the aquarium if the population changes. More animals increase demand for grazing space, complete food and filtration, even when each shrimp remains small.

Answer the key buyer questions

How big does the Deluxe Neocaridina Shrimp Mix grow?

The Deluxe Neocaridina Shrimp Mix reaches approximately 4 cm at maturity. Plan its aquarium, filter protection and companions around that adult length.

What size aquarium does Neocaridina davidi need?

Use a mature, filtered aquarium from 20 litres under Tropical Fish Co’s cautious policy, with established grazing surfaces, cover and a protected filter intake. Increase the plan when fish or other livestock share the aquarium.

How many Deluxe Neocaridina Shrimp Mix shrimp should I keep together?

Keep the Deluxe Neocaridina Shrimp Mix in a group of at least five under OATA’s social-shrimp guidance. The figure is a group starting point, not a permanent shrimp-per-litre formula.

Does this shrimp suit beginners?

This shrimp has an intermediate store care assessment because it needs mature filtration, measured zero ammonia and nitrite, stable water, protected intakes and carefully screened companions.

What does Neocaridina davidi eat?

Neocaridina davidi is omnivorous and grazes algae and biofilm. Provide an appropriate complete shrimp food; OATA’s group routine is two or three feeds per week, allowing at least 30 minutes before removing recurring excess.

What temperature and pH does the Deluxe Neocaridina Shrimp Mix need?

OATA’s group guidance gives the Deluxe Neocaridina Shrimp Mix 17–27°C, pH 6.5–8.0 and 4–18 dGH as planning values rather than a species-specific optimum. Keep ammonia and nitrite at zero and make changes gradually.

Is this shrimp aggressive or likely to nip fins?

The Tropical Fish Co care guide assesses this shrimp as peaceful. Compatibility decisions should focus on whether fish can swallow or hunt shrimp, compete for food or exclude them from usable cover.

Which animals can Neocaridina davidi live with?

Neocaridina davidi may share an aquarium with fish that pass checks for adult mouth size, predatory and territorial behaviour, feeding competition, water overlap and cover. Avoid fish able to fit shrimp in their mouth and species known to be predatory; no fish is guaranteed safe with juveniles.

How does the Deluxe Neocaridina Shrimp Mix arrive alive in the UK?

Film every delivery continuously from the sealed parcel as it is opened, showing the shrimp still inside the sealed bag before anything is disturbed. Someone must be present to receive it; float the bag for 20–30 minutes before release and never pour the bag water into the aquarium.

Check the reference library

• World Register of Marine Species — accepted scientific name, family and order.
• Wikipedia: Neocaridina davidi — natural distribution, habitats, omnivory, colour forms and mature length.
• OATA freshwater shrimp and snail guidance — group water ranges, aquarium planning, feeding, maintenance and compatibility.
• RSPCA aquarium environment guidance — biological filtration and waste processing.
• OATA freshwater aquarium guidance — cycling, testing and gradual stocking.