Yellow Neon Shrimp (Neocaridina davidi)

Choose Yellow Neon Shrimp for a mature aquarium

Yellow Neon Shrimp (Neocaridina davidi) is a bright yellow freshwater dwarf shrimp in the family Atyidae. It is native to Taiwan, eastern China, the Korean Peninsula and Vietnam, and adults reach approximately 4 cm. This animal suits a keeper prepared to maintain a mature, filtered aquarium, measure the water and protect it from predators.

WoRMS lists Neocaridina davidi as an accepted species in Atyidae and Decapoda. Yellow Neon describes the selectively bred yellow colour rather than a separate species. The species is also known as cherry shrimp, a name that comes from its popular red form.

Wikipedia describes the species’ natural history: wild-type animals are mottled brown, while selective breeding has produced yellow and several other colour morphs. It records an omnivorous freshwater shrimp living naturally in lakes, ponds, rivers and streams. In the aquarium, feed it as an omnivore and keep its water measured and stable.

Decide whether its needs fit your routine

This is a small animal, but successful care depends on more than fitting it into a small container. It needs biological filtration, established grazing surfaces, shelter, suitable food and stable chemistry. A larger water volume also changes temperature and water chemistry less abruptly than a very small volume.

The yellow colour makes the shrimp easy to observe against darker surfaces, but colour alone is not a health test. Judge condition through activity, feeding, body appearance and comparison with the rest of the group. A pale or darker appearance can have several causes, so measure the water and review recent changes before altering food or treatment.

Choose this shrimp for a planted or structured freshwater aquarium where you can inspect the filter, test the water every week and control tank-mate risk. Do not treat it as a substitute for cleaning: grazing may help with some soft growth, but filtration, water changes and removal of waste remain the keeper’s job.

Understand the animal and care plan before purchase

One purchase supplies one animal. The dispatch grade is 2–2.5 cm, which describes the shrimp’s size when sent rather than its eventual adult length. Plan the aquarium around an adult length of approximately 4 cm and around the needs of the complete group.

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

The gallery images are representative of this type of animal rather than photographs of the exact animal supplied, so colours can look slightly different from the live animal.

Our complete Cherry Shrimp Care Guide assesses this species as an intermediate-care animal. That assessment reflects the need for mature filtration, measured water, gradual change, protected filter intakes and careful compatibility screening rather than physical size alone.

Use the decisive planning figures

Keep the group at 17–27°C, pH 6.5–8.0 and 4–18 dGH, with at least five shrimp. OATA’s freshwater shrimp and snail sheet gives those figures as broad guidance for the group rather than a species-specific optimum. Tropical Fish Co uses a mature, filtered 20-litre aquarium as a cautious starting policy for a small group; plan larger when fish or other livestock share the aquarium.

If colour-line comparison matters, use our cherry shrimp collection to compare named forms. Different colours can share the same species, but appearance does not change the need for stable water, complete food and protection from predation.

Keep the water stable and measured

Keep Yellow Neon Shrimp at 17–27°C, pH 6.5–8.0 and 4–18 dGH. If you also measure carbonate hardness, use 3–15 dKH as the corresponding OATA planning range. Ammonia and nitrite must remain at zero, while nitrate should not exceed 20 mg per litre above the normal level in the source tap water.

Test the aquarium rather than estimating chemistry from a postcode, tap-water reputation or substrate label. Hardness can vary by local supply, and aquarium rock, substrate, top-ups and treatments can change what the shrimp actually experiences. Our water chemistry guide explains what each measurement means, while the water matcher helps compare measured aquarium values with the care range.

Make one decision at a time

A reading of 24°C, pH 7.2 and 10 dGH sits within all three planning ranges. A reading of 28°C is outside the temperature range even if pH and hardness are suitable. Correct the temperature problem gradually and establish stability before introducing shrimp rather than changing several values at once.

Use a heater only when measured room and aquarium temperatures cannot remain stable within the chosen range. A cool room may need a correctly sized, guarded and thermostatically controlled heater. A warm room needs an overheating plan instead of extra heating. Make that decision from repeated temperature readings, not the season alone.

Stability does not mean ignoring a poor result. Zero ammonia and nitrite are firm requirements because both are toxic waste compounds. If either appears, stop treating the aquarium as ready for more livestock, review filtration and feeding, and continue testing while the biological filter recovers.

Keep replacement water close to the aquarium’s established values and treat it with an appropriate tap-water conditioner before use. Gradual change reduces stress, but it should not be used to preserve unsafe ammonia or nitrite readings. The goal is stable water inside the care range, supported by a functioning filter and regular measurements.

Start with mature filtration and enough space

Use a mature, filtered aquarium of at least 20 litres as our cautious starting policy for a small Yellow Neon Shrimp group. OATA gives at least 10 litres as a general screen for small freshwater shrimp, but we use 20 litres because the extra volume and footprint leave more headroom for equipment, feeding, maintenance and water stability. Increase the plan when fish or other livestock share the system.

“Mature” describes the filter’s biological function, not a fixed number of days. Tests must show that ammonia and nitrite remain at zero while the filter processes the intended livestock and feeding load. The RSPCA explains how biological filtration converts toxic ammonia through nitrite to safer nitrate; the same waste-processing principle matters in a shrimp aquarium.

Build the plan in the right order

1. Measure the real water volume after substrate, wood and equipment have displaced water.
2. Confirm that the filter is operating and ammonia and nitrite remain at zero.
3. Reserve enough accessible grazing and feeding area for at least five shrimp.
4. Include every fish, snail or other animal in the space and filtration calculation.
5. Leave headroom for feeding errors, maintenance disruption and possible juvenile survival.

Do not multiply litres by a fixed shrimp ratio. A permanent shrimp-per-litre formula hides the factors that limit capacity: biological filtration, oxygen, footprint, grazing area, feeding competition, other adult animals and population growth. Twenty litres is a starting policy for planning, not permission to ignore these limits.

If you are preparing your first system, follow our guide to maturing a freshwater shrimp aquarium before livestock arrives. OATA’s freshwater aquarium setup guidance also supports cycling, regular testing and gradual stocking.

Increase the number of animals slowly. Every addition and every increase in feeding requires more waste processing from the bacterial population. Adding too much too quickly can allow ammonia or nitrite to rise even when the aquarium looked stable under a lighter load.

Provide cover, grazing surfaces and a safe filter

Give the shrimp aquarium gravel or sand, established surfaces and plenty of shelter. Aquarium-safe plants, wood, rock and suitable ornaments create places to graze, rest and hide. Arrange them so that you can still inspect the animals, reach the filter and remove trapped waste.

Established surfaces matter because shrimp graze biofilm and soft growth. Biofilm contributes food and gives juveniles accessible grazing area, but it is not a complete feeding plan and does not show that an aquarium has safe water. Confirm maturity with ammonia and nitrite tests rather than relying on an old-looking surface.

Protect every intake

Fit a fine guard or suitable sponge to any filter inlet that could trap a small shrimp or juvenile. Check the guard for blockages because trapped debris can reduce flow. Protection must stop animals entering the intake without preventing the filter from moving and processing water effectively.

Provide cover throughout the usable footprint rather than concentrating every shelter in one corner. A simple layout might combine planted or structured shelter at both ends, open access to a feeding area and clear space around the protected filter. This preserves shelter, an accessible feeding area and room to inspect food after feeding.

A secure lid or cover can help prevent escapes, provided it does not obstruct ventilation, cables or safe equipment operation. Check gaps around pipework and filter fittings. Treat the whole route from water surface to outer edge as part of the enclosure rather than assuming a small shrimp will remain below the waterline.

Inspect the layout after trimming plants or moving decor. Cover that worked before maintenance may disappear when dense growth is removed, and a filter guard can shift during cleaning. Restore shelter and intake protection before treating the job as complete.

Feed an omnivore without fouling the water

Use an appropriate complete sinking shrimp food as the nutritional base. Neocaridina davidi is omnivorous and will also graze biofilm, algae and other soft growth, but grazing alone should not be treated as a complete household feeding plan.

Feed a small measured portion only two or three times a week, following OATA’s group feeding schedule. Leave pellets or wafers for at least 30 minutes so the shrimp have time to reach them, then remove recurring excess before it breaks down. Use the next meal to correct the portion rather than repeatedly adding food because some animals were slow to emerge.

Judge the portion by what happens

• Food disappears immediately: check that every shrimp can reach the feeding area before increasing the next measured portion.
• Food remains after repeated meals: remove the excess, reduce the next portion and check ammonia and nitrite.
• One animal controls the food: spread the measured portion across more than one accessible feeding point.
• The group begins producing juveniles: review food access, grazing area and filtration rather than applying a fixed density formula.
• Water-test trends worsen after feeding: reduce waste input and confirm that the filter is functioning normally.

Supplement grazing with algae wafers alongside the complete shrimp food, keeping the complete food as the base of this omnivorous diet. Follow the food manufacturer’s directions and account for anything fed to fish or other animals in the same aquarium. Community leftovers still contribute to the total waste load.

Do not use colour intensity alone to decide that the shrimp needs more food. Inherited colour, lighting, substrate, stress, health and image processing can all alter how yellow appears. Look at feeding behaviour and body condition, compare the group, and test the water before changing several parts of the diet.

Consistent light feeding is safer than a large corrective meal. Overfeeding can create uneaten waste, bacterial growth and toxic nitrogen compounds, while under-access can leave quieter animals without food. The correct portion is the smallest amount that the group can access without a recurring residue or worsening water tests.

Maintain the aquarium every week

Change 25% of the water at least once every week and test ammonia and nitrite at least weekly. Use a siphon where practical to remove solid waste from accessible substrate, and treat replacement tap water with conditioner before it enters the aquarium.

Check the filter for blockages during maintenance. When filter media needs cleaning, rinse it lightly in aquarium water removed during the water change, never under the tap. Chlorine or chloramine in tap water may kill the beneficial bacteria that process ammonia and nitrite.

Use the test results to direct the job

Keep a short log of temperature, pH, hardness, ammonia, nitrite, maintenance and feeding changes. A sequence of readings is more useful than one isolated value because it shows whether the aquarium is stable or drifting. Change one controllable factor at a time wherever the animals’ immediate safety allows.

Read every treatment and plant-care label for invertebrate warnings. Freshwater shrimp are very sensitive to copper and will die if exposed even to low levels, so add a fish medicine or plant product only when its label shows it is safe for invertebrates. Identify the problem before treating and obtain suitably qualified veterinary help when product compatibility or a persistent health problem is unclear.

Watch for unusual inactivity, restlessness, increased hiding, altered breathing effort, loss of appetite, abnormal swelling, lesions, discolouration, exoskeleton damage or lost appendages. These signs can have several causes. Measure temperature, ammonia and nitrite immediately, inspect equipment and review recent animals, plants, decor, aerosols, foods and treatments.

Follow the arrival steps in order

Arrange for someone to receive the parcel because live animals must not be left unattended. Orders are hand-bagged in pure oxygen, placed in an insulated box and packed with a heat pack when weather conditions call for one. A licensed live-animal courier carries the parcel.

Follow the Tropical Fish Co delivery and Live Arrival Guarantee policy in this order:

1. Start a short continuous unboxing video before the parcel is opened, showing the parcel still sealed, the parcel being opened and the shrimp still in the bag. Open and inspect the parcel the same day it arrives, and keep the video with your order number because it is needed for a Live Arrival Guarantee claim.
2. Float the bag for 20–30 minutes before releasing the shrimp.
3. Never pour the bag water into the aquarium.

Use the first week to confirm stability

After release, observe activity, feeding, colour and use of cover. OATA advises keepers to watch for increased inactivity, restlessness, unusual swimming, darker or paler colour, increased hiding, changed breathing effort, body damage and reduced interest in food. Compare the new animal with the rest of the group rather than interpreting one brief movement in isolation.

Test ammonia and nitrite if behaviour or appearance changes, and continue the normal weekly testing routine even when the shrimp looks settled. Check temperature, filter flow and the intake guard at the same time. These measurements turn an observation into a practical decision and reduce the temptation to add an untargeted treatment.

Add livestock gradually after the aquarium has shown that it can process the existing load. Feeding and waste rise as more animals enter the system, so a filter that coped before an addition may need time for its bacterial population to increase.

Keep aquarium animals, water, plants and equipment contents away from natural waterways. Never release unwanted shrimp or aquarium contents into the wild. Secure rehoming and suitable disposal protect native habitats and prevent an adaptable freshwater species from being introduced outside the aquarium.

Plan for adult growth, moulting and juveniles

Plan on an adult length of approximately 4 cm. Set the aquarium size, cover and companion checks by that adult length from the start, not by the 2–2.5 cm size supplied.

An empty exoskeleton can resemble a dead shrimp, and hiding may accompany moulting. Neither observation alone diagnoses a problem. Check the animal count where practical, compare behaviour across the group and measure temperature, ammonia and nitrite before deciding that treatment is needed.

Allow for juveniles without promising a colony

A mature female carries eggs externally beneath the abdomen. Development is direct or abbreviated, and the young hatch as bottom-living juveniles rather than passing through the prolonged saline planktonic stage associated with Amano Shrimp. Protected filter intakes, established grazing surfaces, suitable food and cover support the aquarium conditions juveniles need.

Those preparations do not promise that a colony will form or survive. Predation, sex mix, water quality, food access, filtration and the condition of individual animals all affect the outcome. Plan enough space and filtration headroom for possible juvenile survival while continuing to judge capacity from measured water and usable grazing area.

If preserving one named yellow line matters, use a single-line aquarium and keep other Neocaridina davidi colour forms out of it. Shared species identity does not mean mixed colours will retain the same inherited appearance over later generations.

Respond to health changes methodically

When signs persist or are severe, record clear observations, test the water and seek suitably qualified aquatic or veterinary help. Do not diagnose a white mark, damaged appendage, failed moult or reduced appetite from appearance alone. Review filtration, aeration, heating, recent maintenance, new animals, plants, decor, food, sprays and treatments as separate possible changes.

Keep reviewing temperature, food access, predation risk and water quality as the group changes over time. Build the aquarium for continuing care instead of planning around a fixed replacement date or monthly population target.

Exclude fish that can hunt or swallow shrimp

Avoid any fish able to fit the shrimp in its mouth and any species known to be predatory. OATA warns that freshwater shrimp may be eaten by common aquarium fish, so a peaceful label for either animal is not enough to establish safety.

No fish is guaranteed shrimplet-safe. A fish that ignores an adult of approximately 4 cm may still eat newly hatched juveniles, and behaviour can change around feeding, territory or a moulting shrimp. Screen the complete adult community before adding the shrimp rather than judging only the fish’s size at purchase.

Apply five checks to every proposed companion

1. Adult mouth size: reject the pairing when the fish could fit an adult shrimp in its mouth, and use a shrimp-only aquarium when juvenile survival is the goal.
2. Hunting and territorial behaviour: reject known predators and plan separation if chasing or stalking begins.
3. Feeding competition: confirm that shrimp can reach complete food without faster animals taking every portion.
4. Water overlap: use one stable temperature, pH and hardness range suitable for every animal.
5. Usable cover: retain shelter after plant trimming and provide routes that do not force shrimp through exposed territory.

Watch the pairing at feeding time and around the structures shrimp use for cover. Repeated stalking, lunging, displacement or inability to reach food means the plan is failing even if no injury is visible. Separate the animals as soon as these signs appear.

Use adult size when checking fish, but plan juvenile survival separately. “Safe with adults” and “safe for a growing colony” are different decisions. If the goal is maximum juvenile survival, remove fish predation from the plan by using a shrimp-only aquarium.

A shrimp-only aquarium removes fish predation, but it does not remove water-quality, equipment, feeding, crowding or health risks. Continue to protect filter intakes, maintain cover, measure the water and allow filtration headroom for the group.

Choose between display coexistence and colony growth

Decide whether the aquarium is intended for display coexistence or maximum juvenile survival. A mixed display accepts more predation and feeding competition, while a shrimp-only plan removes fish predation and makes food access easier to observe. Neither plan replaces mature filtration or measured water.

Use the goal to set the safeguards

OATA describes freshwater shrimp and snails as generally compatible with most aquarium species, but apply the full screen to each actual animal. Shared water requirements, non-predatory behaviour and adequate food access are conditions of a pairing, not a universal tank-mate promise.

Start with at least five shrimp, as OATA advises, in a mature, filtered 20-litre aquarium under our cautious policy, then increase space for every additional animal. Count the real water volume and footprint after decor and equipment. Leave enough feeding and grazing area for shrimp that avoid open territory when fish are active.

Keep a separation plan ready before mixing animals. A spare mature aquarium is useful only when it preserves filtration, water quality and suitable space; moving a shrimp into an immature container simply exchanges one risk for another.

Reassess compatibility after fish mature, territories change, plants are trimmed or the shrimp group begins producing juveniles. A pairing that appeared calm under one layout can change when cover disappears or a fish’s adult mouth size and behaviour develop.

Answer common Yellow Neon Shrimp questions

How big does Yellow Neon Shrimp get?

It reaches approximately 4 cm as an adult. Plan the aquarium and companion screening around that maximum adult length.

What size aquarium does Yellow Neon Shrimp need?

Tropical Fish Co uses a mature, filtered 20-litre aquarium as a cautious starting policy for a small group. Plan larger when fish or other livestock share the system.

How many Yellow Neon Shrimp should I keep together?

OATA’s freshwater shrimp guidance says to keep them in a group of at least five. Increase the aquarium plan according to filtration, grazing area, companions and possible population growth rather than using a fixed shrimp-per-litre formula.

Is Yellow Neon Shrimp suitable for beginners?

It has an intermediate store care rating. It suits a keeper who can provide mature filtration, zero ammonia and nitrite, measured water, protected filter intakes and carefully screened companions.

What does this shrimp eat?

This shrimp is omnivorous. Use an appropriate complete sinking shrimp food as the nutritional base, allow grazing on established biofilm and soft growth, and adjust small portions according to food access and waste.

What temperature, pH and hardness does it need?

OATA’s freshwater shrimp guidance gives 17–27°C, pH 6.5–8.0 and 4–18 dGH. Maintain zero ammonia and nitrite, measure the aquarium regularly and make changes gradually.

Is this shrimp aggressive or likely to nip fins?

This shrimp is assessed as peaceful. The main mixed-aquarium risks run the other way: fish may hunt or swallow shrimp, while faster animals may prevent them reaching food.

Which animals can it live with?

It may share an aquarium only with animals whose water needs overlap and that do not hunt, swallow or outcompete it. No fish is guaranteed safe for newly hatched juveniles.

How does Yellow Neon Shrimp arrive alive in the UK?

Tropical Fish Co’s policy says it is hand-bagged in pure oxygen, insulated and carried by a licensed live-animal courier. Be home to receive it, start filming the sealed parcel before opening, float the bag for 20–30 minutes before releasing the shrimp and keep bag water out of the aquarium.

Check the reference library

• WoRMS: accepted scientific name, family and taxonomic placement.
• Wikipedia: native range, natural habitat, omnivorous biology, colour forms and adult length.
• OATA freshwater shrimp and snail sheet: group water ranges, space, social care, feeding, maintenance and compatibility.
• RSPCA aquarium welfare guidance: biological filtration and nitrogen-waste processing.
• OATA freshwater aquarium setup sheet: cycling, testing and gradual stocking.
• Tropical Fish Co delivery policy: packing, receipt and acclimatisation procedure.