SKU: 7791101351

[ARRIVED 24-MAR-2026] Yang Gui Fei Medaka 2-4cm

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Description

[ARRIVED 24-MAR-2026] Yang Gui Fei Medaka 2-4cmOryzias latipes (Japanese Ricefish) Hardy, adaptable nano fish available in multiple colour varieties Colour Variant: {{ product. selected_or_first_available_variant. title }} Quick Facts Size: ~34 cm Tank size: 30L+ recommended Difficulty: Easy Temperament: Peaceful Best kept: Groups (6+) Plant safe: Yes Is this for you? Good if: You want a hardy and adaptable nano fish You enjoy top to mid water activity You want a fish suitable for indoor or

Oryzias latipes (Japanese Ricefish)

Hardy, adaptable nano fish available in multiple colour varieties

Colour Variant: {{ product.selected_or_first_available_variant.title }}

Quick Facts

  • Size: ~3–4 cm
  • Tank size: 30L+ recommended
  • Difficulty: 🟢 Easy
  • Temperament: Peaceful
  • Best kept: Groups (6+)
  • Plant safe: Yes

Is this for you?

✔️ Good if:

  • You want a hardy and adaptable nano fish
  • You enjoy top to mid-water activity
  • You want a fish suitable for indoor or outdoor setups
  • You are happy to keep a proper group

❌ Avoid if:

  • You keep aggressive or large fish
  • You plan to keep just a few
  • You want a bottom-dwelling species
  • You have an open-top tank without cover (jump risk)

Why this fish?

Oryzias latipes, commonly known as Japanese Ricefish, is a highly adaptable nano species available in a wide range of colour varieties.

It is well-suited for both aquarium and outdoor setups, making it one of the most versatile small fish available.

Common mistakes

  • Keeping too few → reduces activity and natural behaviour
  • Keeping in open-top tanks → risk of jumping
  • Assuming all colour lines have identical robustness
  • Pairing with aggressive or highly active fish
  • Underestimating their need for group dynamics

Care made simple

  • Temperature: 18–28°C (very adaptable)
  • Diet: Flakes, micro pellets, frozen foods
  • Group size: 6+ recommended
  • Setup: Plants, open swimming space
  • Water: Clean, stable

Pair with

  • Quality flakes / micro pellets
  • Planted tanks or outdoor tubs
  • Peaceful nano fish
  • Shrimp setups
NTA Insight:
One of the most adaptable nano fish available. Colour varieties differ visually, but behaviour remains consistent — focus on group size and stable conditions.

FAQ

Are they good for beginners?

Yes. They are one of the most beginner-friendly nano fish available.

Can they live outdoors?

Yes. They are commonly kept in outdoor tubs or ponds in suitable climates.

Do different colours behave differently?

Behaviour is the same, though some selectively bred lines may be slightly less robust.

Where do they swim?

Mostly top to mid-water.

Do they jump?

Yes, so a lid or cover is recommended.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 7791101351

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Honest_buyer
Los Angeles, US
★★★★★ 5
Good product overall
Size: 60 Count (Pack of 1)
Works really well, but only for a while. After about 3 or 4 weeks, it begins to stop working. Side effects-can leave you groggy if you don't get enough sleep. Helps you sleep better for a month or so. No odor. Good value for money, they don't cost a lot. Just melatonin and veggie caps. No other ingredients as far as I read
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Reviewed in the United States on May 15, 2026
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Kathy B.
Lake Worth, US
★★★★★ 5
Works well I will continue buying them
Size: 60 Count (Pack of 1)
This melatonin gives me a good nights sleep. I thought it was 3 mg but it is not, my mistake! I take two of these because 3 mg doesn't do it for me. I sleep like a baby when I take these and wake up feeling rested.
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Reviewed in the United States on April 4, 2026
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Amazon Customer
Omaha, US
★★★★★ 5
Incredibly Helpful for Sleep & Not Hard to Swallow w/Water or w/o
Size: 60 Count (Pack of 1)
I shouldn't be taking these due to certain medical conditions, but they taste like nothing, super effective - like I fall asleep within maybe 30-45 minutes - and I STAY asleep watch is a lot more than I can say for any other melatonin products that I've used. Again, I do have restrictions, so I only take them once in a while, but so does my roommate and he says the same. They're small enough to not be hard to swallow as well. I've recommended them to some of my friends and family and we're all in agreement. I mean, of course, consult your doctor first, but like, these have been one of the most helpful supplements for sleep which is super important to me
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Reviewed in the United States on December 20, 2025
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Dai
Los Angeles, US
★★★★★ 5
A full nights sleep
Size: 60 Count (Pack of 1)
This product helps keep me asleep throughout the whole night, not just in the beginning.
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Reviewed in the United States on April 19, 2026
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Robert Willman
Carnegie, US
★★★★★ 5
good vendor
Size: 60 Count (Pack of 1)
fabulous slow release ,,,, good quality
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Reviewed in the United States on May 6, 2026

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