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Cull Shrimp

Cull Shrimp

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Pack Size: 5

Sub total:

$10.00
How Many Do I Need?
1 gal5101520 gal
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Description
Neocaridina Shrimp

Culls

Off-grade Neocaridina shrimp removed from colour breeding lines -- healthy, active, and fully functional shrimp available at reduced cost for planted tank maintenance, breeding projects, or colony starters.

Off-Grade from Colour Breeding Lines Healthy and Fully Functional Reduced Cost Mixed Colours and Patterns Excellent for Planted Tank Maintenance Breed Freely in Freshwater

Culls are Neocaridina shrimp that have been removed from colour breeding lines because their colouration, pattern, or coverage does not meet the grade threshold for the specific colour morph being selected -- they are not sick, not stunted, and not damaged. They are healthy, active, fully functional dwarf shrimp that happen to carry insufficient colour saturation, incomplete coverage, or mixed-morph colouration to qualify as sellable grade animals in the line they came from. In a colour breeding operation, culls are produced continuously because selective breeding for specific traits is statistically imperfect -- the majority of offspring from any colour line carry some level of colour reduction, transparency, or mixed-morph expression that places them below the display grade threshold. These animals require the same care, eat the same food, breed freely in the same conditions, and perform the same tank maintenance functions as grade animals. They are available at a reduced price for keepers who want the functional benefits of a Neocaridina colony without the premium associated with high-grade colour selection.

6.8-7.8pH
6-14GH
2-8KH
65-78FTemperature
¼–½ inchSize

What Culls Are and What They Do

Healthy, active, fully functional shrimp -- the colour grade is the only difference -- culls are removed from colour lines exclusively on the basis of colour or pattern quality -- not health, size, behaviour, or reproductive capacity. A cull that carries translucent or mixed-colour colouration is otherwise identical to a grade animal from the same colony in every respect that matters for tank function: it eats the same food, breeds in the same conditions, performs the same algae and detritus grazing, and lives the same lifespan. Mixed colours and patterns -- each batch varies -- cull batches draw from whatever off-grade animals are available at the time of the order from across the colour lines in current production. A batch may include translucent or pale individuals from red lines, partially coloured individuals from blue or orange lines, or mixed-expression animals showing elements of two or more colour morphs. The specific combination is not predetermined and varies between orders. Ideal for planted tank maintenance where colour is not the primary goal -- in a heavily planted tank where shrimp serve primarily as algae cleaners, biofilm grazers, and detritus processors rather than display animals, culls provide identical functional performance at significantly lower cost than grade shrimp. A colony of culls in a planted tank performs exactly the same maintenance functions as a colony of grade animals in the same conditions. Breed freely in freshwater -- colony grows over time -- culls breed freely in standard freshwater Neocaridina conditions without any intervention. Offspring from a mixed cull colony produce a further range of colour expressions including some that may carry more vivid colouration than the parent generation -- making a cull colony an interesting breeding project for keepers who want to observe colour expression variation across successive generations. Do not mix with display-grade colour lines -- if colour line purity is a goal in any tank in the setup, keep culls in a separate dedicated tank. Neocaridina interbreed freely across colour expressions and a cull introduced to a grade colour-line tank will contribute to colour dilution in the offspring of that colony. Best value way to establish a functional shrimp colony in a new planted tank -- for a new planted tank that needs a shrimp colony for maintenance and biofilm grazing while plants establish, a cull colony provides the full functional benefit of a Neocaridina colony at the lowest possible per-animal cost, allowing the livestock budget to be concentrated on grade display animals once the planted tank is established and ready for them.

Getting Started

1Stable Neocaridina parameters before introduction -- pH 7.0-7.4, GH 6-8, KH 3-5, temperature 72-75F. Confirm stability with daily testing for at least one week before introduction.
2Drip acclimate over 45-60 minutes -- float bag 15 minutes, drip at one drop per second for 45-60 minutes before release.
3Dense moss and biofilm surfaces established before shrimp arrive -- Java Moss, Christmas Moss, or any fine-structure plant provides biofilm and shrimplet shelter from the first breeding cycle.
4Feed the same as any Neocaridina colony -- comprehensive sinking food every one to two days, remove uneaten portions after two hours. Culls have identical feeding requirements to grade Neocaridina.
Bonus Tip

A cull colony in a dedicated planted tank is one of the most practical staging setups for a serious Neocaridina keeper -- the cull tank handles algae maintenance and biofilm grazing in the planted display tank while grade-colour breeding tanks run separately with undiluted colour lines. When the display tank is ready for grade shrimp, remove the culls and introduce grade animals to a clean, established, biologically stable environment rather than cycling a new tank from scratch.

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Browse more Neocaridina shrimp

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Before placing your order, please review our DOA Policy Shipping Info
Reviews
Policies & Disclaimers
Before you order

Policies & Disclaimers

What to expect from your shrimp, how our guarantee works, and what to do when your order arrives.

Size

¼–½ inch

We select this size because younger shrimp generally tolerate shipping and adjust to a new aquarium better than fully grown adults. Proper acclimation and stable water conditions remain essential.

Photos & appearance

Product photos show representative examples of the shrimp’s variety and appearance. They do not show the exact animals you will receive or guarantee an identical color, pattern or intensity.

Individual appearance can vary with age, sex, lighting, substrate, aquarium conditions and shipping stress. Shrimp may arrive with lighter coloration and develop fuller color as they settle and mature.

Photos may show mature individuals. Please use the stated size and pack details to understand what you are purchasing.

Grades & selection

Unless a listing explicitly states a grade or selection standard, such as “S Grade” or “Painted Fire Red,” shrimp are sold as mixed grade. When specified, that listing’s grade or selection standard applies.

Even within the same grade, color coverage, intensity and pattern naturally vary. Individual shrimp are not guaranteed to look identical to the product photos.

Natural differences between males and females also apply to S Grade selections. Males may be smaller and less intensely colored than females of the same variety, including within an S Grade selection. This difference alone does not mean a male is incorrectly graded.

Natural variation alone is not considered a DOA claim. If you believe you received the wrong variety or a product that does not match its stated grade, contact us with clear photos so we can review it.

Males & sex selection

Male shrimp may be smaller and less intensely colored than females of the same variety. This difference alone does not indicate poor health or an incorrect grade. This also applies to S Grade selections; selecting a grade does not guarantee female-like size or color intensity in males.

Unless the listing explicitly promises a particular sex or ratio, individual males, females and sex ratios are not guaranteed.

Breeder packs

Breeder packs include a minimum of 8 females and 2 males. Bonus shrimp are random scoops and are not selected by sex, so your pack may contain more than 2 males when bonuses are included.

A breeder pack does not guarantee adult size, berried (egg-carrying) females, immediate breeding or a particular number of offspring.

Breeding results depend on maturity, acclimation and aquarium conditions.

What to expect after shipping

Temporary faded color, hiding, reduced activity and reduced appetite can occur after shipping. Provide a stable, established aquarium with appropriate conditions and follow proper acclimation practices.

Shipping stress alone is not a confirmed DOA. Our guarantee covers confirmed losses on arrival under its stated conditions; losses after the two-hour claim window are not covered.

Bonus shrimp & your paid count

When inventory allows, we may include one bonus animal for every five ordered of the same species. Bonuses are discretionary, are not guaranteed and are not separately eligible for refund or replacement.

Bonus shrimp are random scoops, not sex-selected. They may be male or female and can change the overall sex ratio of a breeder pack, including bringing the total above 2 males.

Bonus animals count toward the total arriving alive. Guarantee coverage applies when live arrivals fall below the number you paid for.

Example: If you pay for 10 shrimp and receive 12, an arrival of 11 live shrimp still fulfills your paid count. If fewer than 10 arrive alive, the shortfall may qualify under the guarantee.

For a suspected short count, document the animals, empty bag and shipping label before introducing shrimp to your aquarium. Refer to the full policy for the required counting photos.

Molting, shelter & handling

Shrimp shed their exoskeleton as they grow. A transparent, empty molt can resemble a shrimp; finding one does not by itself mean an animal has died. Provide grazing surfaces and shelter so freshly molted shrimp can remain undisturbed.

Avoid handling delicate shrimp to check their color or sex. If an animal appears injured, trapped in a molt or dead on arrival, photograph its condition through the unopened bag and report the concern promptly. Care observations do not replace the guarantee’s claim evidence.

Choosing tankmates & maintaining color lines

Small shrimp and shrimplets can be eaten by fish, even when adult shrimp appear to coexist with them. Dense plants and hiding spaces reduce exposure but cannot guarantee survival with predators. Review the particular shrimp’s water requirements alongside those of any tankmates.

Different Neocaridina color lines can interbreed, and offspring may not retain the parent colors. A mixed-color display and a breeding project with a consistent color line have different goals. A shrimp’s appearance at purchase does not guarantee the appearance of future offspring.

Acclimation & ongoing care

Prepare a stable, established aquarium before delivery. Use the acclimation guidance appropriate to the species and compare your measured water conditions with its published requirements rather than changing water rapidly to chase a single number.

Inspect and document any arrival concern before transferring animals, following the full guarantee’s documentation rules. Ongoing feeding, water quality and breeding outcomes depend on aquarium conditions; the Live Arrival Guarantee is an arrival policy, not a promise of future breeding or lifespan.

Checking quantities & reporting a short count

Check the actual animals received against your paid order quantity. For a suspected short count, the full policy calls for a clear counting photo showing all animals, the empty bag and the shipping label before they are introduced into an aquarium. Follow its counting instructions and contact us if you cannot document the count clearly.

Verified miscount claims are resolved with a refund for the missing paid animals under the current policy. A count made after release can be unreliable when animals hide among plants or hardscape.

Before opening: photographs & your first report

Use the email address on the original order and include all arrival concerns in the initial message to support@superiorshrimpaquatics.com within two hours of the carrier’s recorded delivery time. Photograph the sealed bag, visible and countable animals, shipping label, box and packing materials.

If the bag is leaking or damaged, photograph the leak or damage and wet packing before opening. Keep the original photographs and packaging. For cloudy water that prevents counting, take the original cloudy-water photo first and follow the full policy’s specific additional clear-container documentation instructions.

The guarantee contains restrictions on opening bags, acclimation and transfers. Review those instructions before taking action so the evidence needed to assess the claim is preserved.

Arrival problem? Document it promptly.

Email support@superiorshrimpaquatics.com within two hours of the carrier’s recorded delivery time, using the email address on your order.

  • Photograph the original sealed bag with the animals visible and countable.
  • Include the shipping label, outer box and packing materials.
  • Document any bag damage or leakage before opening.
  • Report all arrival losses in your initial message.

Read the full guarantee for photo requirements, cloudy-water documentation and claim eligibility before opening or transferring animals. Approved claims are resolved under the options and conditions stated there.

Shipping & coverage limits

Ground shipping carries increased risk for live animals, and the policy reserves the right to refuse guarantee claims on ground shipments. Choose your shipping method carefully.

The guarantee applies to the first delivery attempt. Redirection, pickup holds and carrier delays can affect eligibility under the full policy. Any product-specific coverage restrictions stated in a listing also apply.

Hitchhikers & quarantine

Live aquatic products can carry tiny hitchhikers or eggs despite inspection. Pest-free arrival is not guaranteed. We recommend quarantining new arrivals before introducing them into an established aquarium.

Returns

Care guidance in this tab does not create additional guarantee requirements or exclusions. Please read the full policies for complete eligibility, documentation, resolution and return requirements.

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