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Daisy's Rice Fish (Oryzias woworae)

Daisy's Rice Fish (Oryzias woworae)

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Descripción
Freshwater Fish

Neon Blue Rice Fish

A tiny, shimmering ricefish from Sulawesi, Indonesia with an iridescent blue body and vivid red-orange fin tips. Beginner friendly, breeds readily, and one of the most shrimp-safe fish in the hobby.

Iridescent Blue Body with Red-Orange Fins Oryzias woworae Under 1.2 Inches pH 6.5–8.0 Beginner Friendly Outstanding Shrimp Companion

Neon Blue Rice Fish (Oryzias woworae), also known as Daisy's Blue Ricefish and named after Indonesian carcinologist Daisy Wowor who first collected and described the species, are a tiny, vividly coloured ricefish (medaka) from the slow-moving streams and ponds of Muna Island in Southeast Sulawesi, Indonesia. The body is translucent with a shimmering iridescent blue-green hue that catches and reflects light as the fish moves, and the fins carry vivid red to orange-red markings that create a warm-cool colour contrast striking for a fish barely 1 inch in length. Males are more intensely coloured than females and develop slightly extended fins. They are exceptionally hardy, beginner friendly, adaptable to a wide range of water parameters, and breed readily in a well-planted setup. One of the most shrimp-compatible fish in the hobby due to their small mouth size and peaceful disposition. Keep in groups of 6 or more in a densely planted tank with dark substrate and floating plants for best colour expression.

6.5–8.0pH
4–18GH (dGH)
72–82°FTemperature
1.2 inMax Size

Iridescent Blue with Red-Orange Fins

Translucent body with iridescent blue-green sheen and vivid red to orange-red fin markings. The colouration of O. woworae is most vivid in adult males in good condition. The iridescent blue of the body shifts and glows as the fish moves through light, and the red-orange of the fin edges creates a warm-cool contrast that makes the fish immediately striking despite its tiny size. The colour is most intense in subdued lighting against dark substrate, where the iridescence reads as a glow rather than a surface reflection. Floating plants that diffuse overhead light enhance the effect significantly. Males more vivid than females -- displaying behaviour between males intensifies colour. Males are noticeably more colourful than females and develop slightly longer dorsal and anal fins. In a mixed group with both sexes present, males display to each other and to females, during which their colour intensifies and the iridescent blue becomes most saturated. Maintaining a ratio of roughly one male to two females reduces competitive stress while keeping display behaviour active. Top-dwelling and surface-oriented -- active at the upper water level. Neon Blue Rice Fish spend most of their time in the upper third of the water column and at the surface. This surface orientation means they are particularly visible and particularly well-displayed in tanks with floating plants like Frogbit or Salvinia, where the fish weave through the root systems continuously. Their position at the top of the tank complements bottom-dwelling shrimp perfectly without any competition for the same space. Breeds readily in a planted tank -- females carry egg clusters before depositing them on plants. Female Neon Blue Rice Fish carry fertilised egg clusters attached to their bodies for a period before depositing them on fine-leaved plants and moss. The eggs hatch in 1 to 3 weeks depending on temperature. Adults generally ignore eggs but may consume newly hatched fry. A separate breeding container or dense moss provides fry refuge in a community setup. Breeding is straightforward and occurs without intervention in a well-established planted tank. Hardy and adaptable -- one of the most parameter-tolerant ricefish available. O. woworae tolerates a wide range of pH, hardness, and temperature. It is also uniquely tolerant of varying salinity, thriving in freshwater, low-salinity brackish, and reportedly even fully marine conditions. In a standard freshwater planted tank it is among the most forgiving and least demanding nano fish available, making it well-suited to beginner and experienced keepers alike.

Exceptionally Shrimp Safe

Tiny mouth -- adult Neocaridina and Caridina shrimp are completely safe. The mouths of O. woworae are extremely small relative to body size. Adult shrimp are well beyond what the fish can consume. Only the very smallest newly hatched shrimplets in their first days of life are at any risk, and in a planted tank with Java Moss or Subwassertang the survival rate of shrimplets alongside Neon Blue Rice Fish is very high. They are widely recommended as one of the safest fish for shrimp breeding tanks. Surface-dwelling habit means minimal interaction with substrate-level shrimp. Because Neon Blue Rice Fish occupy the upper water column and shrimp spend most of their time at the substrate and hardscape level, the two species rarely interact. This natural vertical separation further reduces any predation risk and means the two animals essentially share the tank without competing for the same space at any point. Wide parameter tolerance overlaps well with both Neocaridina and Caridina. The broad parameter range of O. woworae means it can be kept comfortably in standard Neocaridina water (pH 6.8 to 7.8) and in softer, slightly acidic Caridina setups alike. No water chemistry compromise is required to keep both species together in either parameter range.
Keeper's Note

A group of 10 Neon Blue Rice Fish in a planted shrimp tank with floating Frogbit, dark substrate, and Java Moss creates one of the most complete and most visually layered nano tank displays available. The fish work the surface and upper water; the shrimp work the substrate and hardscape below. The iridescent blue of the fish catches the light filtering through the floating plant roots above; the shrimp colours read against the dark substrate below. The two animals never compete and never conflict, and the result is a tank that is visually interesting at every level simultaneously. Feed small foods twice daily and the Neon Blue Rice Fish will breed on their own without any further intervention.

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Policies & Disclaimers
Before you order · Fish

Policies & Disclaimers

What to expect from your fish, overnight shipping requirements, and what to do when your order arrives.

Overnight shipping required for guarantee coverage

Choose overnight (next day air) shipping for fish. Our Live Arrival Guarantee does not cover fish shipped by 2-day, standard expedited or ground service. Overnight shipping is a condition of coverage; the claim deadline and documentation requirements below also apply.

Size & representative photos

Fish size and appearance vary by species, age and individual. Refer to the listing and selected option for any stated purchase size. Adult or maximum sizes in care information describe growth potential, not a guaranteed size on arrival. Photos represent the species or variety rather than the exact fish you will receive.

Color & settling in

Color and markings can vary between individuals and with age, sex, lighting and aquarium conditions. Fish may look paler after shipping. Follow the species-specific acclimation and care guidance and provide stable water conditions. If a fish arrives dead or visibly distressed, document its condition and contact us promptly rather than waiting beyond the claim window.

Species needs & compatibility

Check the specific listing for adult size, temperature, water requirements, diet and recommended group size. A small shipping size does not mean a fish will stay small. Choose suitable tankmates and allow for adult growth; a community-fish label is not a guarantee of compatibility with every fish or invertebrate.

Pack contents & selection

The selected quantity identifies the number of fish ordered. A group does not by itself promise a breeding pair or particular sex ratio. Any explicit sex or selection offered in the listing applies to that selected option.

Juvenile appearance, growth & sex differences

Young fish may have less intense coloration, different proportions or less-developed fins than mature examples in photographs. Species, age, sex and social conditions can affect their appearance. Adult-size figures describe growth potential, not the size guaranteed in the shipping bag.

Plan housing around adult needs. A small pleco, for example, still needs the space and diet appropriate to its identified species as it grows. Use the listing’s stated species and selected option rather than a photograph alone to judge what you are buying.

Unless a listing explicitly offers a sex-selected option, a quantity pack is not a specified sex ratio or breeding pair. Where an explicit selection is offered, that selected option applies.

Shipping appearance versus concerning distress

Paler colors, hiding and a reduced initial appetite can occur after transport. These observations alone do not establish a covered loss. They also should not be used to dismiss a fish that appears to be struggling.

Photograph or record visible concerns such as loss of balance, persistent labored breathing, an obvious wound or a fish that appears dead while it is still in the original packaging. Include the label and packaging and contact us promptly within the two-hour reporting window. Report observations rather than guessing a diagnosis.

Do not wait for color or activity to improve before reporting an arrival concern. Coverage and resolution follow the full guarantee; this guidance does not add a new health guarantee or extend the claim window.

Schools, tankmates & adult housing

Schooling fish should be housed with an appropriate group of their own species. The quantity options offered for purchase are not a statement that each option is a suitable permanent school size. Check the listing’s group-size guidance and the aquarium’s capacity.

Peaceful fish can still eat animals small enough to fit in their mouths, including shrimplets. Consider adult size, feeding behavior, water requirements and available shelter when choosing tankmates. No general community label guarantees compatibility in every aquarium.

Bottom-dwelling fish need food that reaches them; they should not be expected to live only on leftovers. Provide the species-appropriate diet and observe whether quieter fish are being outcompeted.

Acclimation & quarantine

Have a stable, cycled aquarium or suitable quarantine setup ready before the shipment arrives. Follow the acclimation instructions appropriate to shipped fish and the species; do not assume a single timed method is suitable for every shipment or bag condition.

Document arrival concerns before transfer under the guarantee’s instructions. Avoid adding shipping water to the established aquarium, and minimize unnecessary handling and disturbance during introduction.

Separate observation of new fish can help protect an established collection and make feeding and behavior easier to monitor. Quarantine is care advice here, not a newly added condition of claim eligibility. Do not medicate automatically without considering the species and the actual concern.

Bonus animals & your paid count

When inventory allows, our policy provides one bonus animal for every five ordered of the same species. Bonuses are discretionary and are not separately covered for refund or replacement. They count toward the total arriving alive when assessing whether your paid quantity was fulfilled.

For example, if you order 10 fish and receive 12, receiving 11 alive fulfills the paid count. If fewer than 10 arrive alive, the shortfall is assessed under the guarantee. Expected bonuses that were not included are not a paid-item shortage.

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

Fish must ship by overnight (next day air) service to qualify for the Live Arrival Guarantee. Fish shipped by 2-day, standard expedited or ground service are not covered. Selecting a non-overnight method waives guarantee coverage for the fish in that order.

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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