---
title: "Seiryu Stone — $56K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/pet-supplies/seiryu-stone"
last_updated: "2026-07-22T21:29:53.576Z"
locale: en
meta:
description: "Niche score 47/100 · $56K/yr market · 47K searches/yr · $32.55 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 47/100 · $56K/yr market · 47K searches/yr · $32.55 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Seiryu Stone — $56K/yr Amazon US Niche (2026) - Flapen"
---
# **seiryu stone**
**Skip it**
A small market ($56K/yr) — this niche doesn't clear our bar today.
Market size 14Growth 19Conversion 45Competition 44Returns 77Price range 89Avg price 95Brand share 49Review moat 75Quality gap 57
**Avg price**
**Incredible****$32.55**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$9.86–$80.36**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Returns**
**Great****1.9%**
return rate — above 6% kills the launch gate
**Review moat**
**Great****497.22**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Okay****76%**
top-5 brand share — brands hold most of the demand
**Conversion**
**Okay****3.6%**
search→purchase rate — share of searches ending in a sale
**Competition**
**Okay****59%**
top-5 click share — leaders hold, buyers still browse
**Growth**
**Bad****-11.1%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$56K**
$56K/yr · 47K searches
According to Flapen's Amazon United States niche tracking, seiryu stone is a $56K/yr Amazon United States market (47K searches/yr). The top 5 brands hold 76% of demand. Verdict: Skip it — 47/100.
Data updated Jul 17, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **seiryu stone market data**
- **Units sold / yr**
- **2K–2K**
- avg 0–100/product
- **Revenue / yr**
- **$49K–$65K**
- units × avg price
- **Launch success**
- **—**
- 0 of 3 new (360d)
- **Conversion rate**
- **3.6%**
- **Avg BSR**
- **#29**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **13.9%**
- **Avg brand age**
- **45 months**
- **Avg seller age**
- **185 days**
## **Competition & brand share**
The top 5 products take 59% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**12 **▼falling
**Sellers**
**13**
**Top-5 brand share**
**76%**
Top 20: 100%
**Top-5 click share**
**59%**
Top 20: 100%
**Open market**
**17%**
- ChaoLeHo34% - Unocho15% - Generic10% - KINGRUI8% - Voulosimi8% - Eorbow8% - Open — no brand owns it (6 brands, 17%)
## **Demand**
Weekly Amazon search volume, last 24 weeks — -11.1% search growth over the last 90 days.
1K600Feb '26Mar '26Mar '26Apr '26May '26Jun '26
[**Open Trend **](https://flapen.com/research/us/pet-supplies/seiryu-stone/trend)
## **Top seiryu stone search terms**
- **seiryu stone**26K/yr-0.7%2.5% conv. - **seiryu stone for aquarium**18K/yr-26.2%2.9% conv. - **seiryu stones**3K/yr+0.2%3.4% conv. [**All search terms **](https://flapen.com/research/us/pet-supplies/seiryu-stone/search-terms)
## **Top seiryu stone products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%10%$6K20%$11K30%$17K40%$22K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 18 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**ChaoLeHo Aquarium Rocks Seiryu Stones Natural Hardscape Stone for Aquariums Fish Tanks Bonsai Terrariums Wargaming Dioramas Indoor or Outdoor Gardens-5lb(2-6 Inch)**ChaoLeHo**$23.80**4.5★636 rev](https://www.amazon.com/dp/B0DH3LYXWP) [2**Unocho Aquarium Rocks Natural Seiryu Stone 20lb Aquascaping Rocks for Fish Tank Aquarium Landscaping Decoration Paludarium Amphibian Enclosures(3-10 Inches)**Unocho**$47.26**4.4★513 rev](https://www.amazon.com/dp/B0CBPGY3CV) [3**KINGRUI Natural Rocks Seiryu Stone 1-2.5 Inches Decorative Stones for Fairy Gardens Miniature Landscaping Bonsai DIY Crafts Aquariums & Reptile Terrariums-1lb**KINGRUI**$14.98**4.5★207 rev](https://www.amazon.com/dp/B0FCN3849Y) [4**Eorbow 12lb Seiryu Stone Aquarium Rocks for Terrariums Paludarium Vivariums Reptile Amphibian Enclosures Fish Tank Decor for Aquarium Landscaping Models**Eorbow**$25.41**4.5★111 rev](https://www.amazon.com/dp/B0D2W294ZS) [5**ChaoLeHo Natural Rocks Seiryu Stones Aquariums Stones for Aquascaping Aquariums Terrariums Vivariums Decorative Stone Reptile Enclosures Paludariums and Gardens-10lb2 to 7 inch**ChaoLeHo**$32.99**4.5★636 rev](https://www.amazon.com/dp/B0DH3MC67L)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Korvuli Seiryu Stone Aquascaping Rocks 1 lb (2-4) Aquarium Stone Set**Korvuli**$9.86**16 rev3mo ago](https://www.amazon.com/dp/B0GX5QDZ1H) [**FISCAPE 2.2-8.1 Inches Natural Seiryu Stone 5 PCS Mixed Sizes Aquarium Rocks for Aquascaping Iwagumi Layouts Terrariums & Aquarium Dcor**FISCAPE**$26.68**54 rev7mo ago](https://www.amazon.com/dp/B0G5NDDSNK) [**Kecilke Aquarium Rocks Seiryu Stone 2-4 Inches Natural Rocks 5lb Fish Tank Rocks for Aquariums Tank Decoration Landscaping & Amphibian Enclosures Paludariums**Kecilke**$23.86**22 rev11mo ago](https://www.amazon.com/dp/B0FJRNYFPP) [**KINGRUI Natural Rocks Seiryu Stone 1-2.5 Inches Decorative Stones for Fairy Gardens Miniature Landscaping Bonsai DIY Crafts Aquariums & Reptile Terrariums-1lb**KINGRUI**$14.98**207 rev1y ago](https://www.amazon.com/dp/B0FCN3849Y) [**VOKOY 2.5lb Natural Seiryu Stones Aquarium Rocks Decoration Aquascaping Stone Landscaping Model for Fish Tank Decor Terrariums Paludariums Reptile Enclosures Gardens 2-6 inches**VOKOY**$15.06**136 rev1y ago](https://www.amazon.com/dp/B0DY4D4BJ4)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Korvuli Seiryu Stone Aquascaping Rocks 1 lb (2-4) Aquarium Stone Set**Korvuli**$9.86**4.3★**▲ 254%**](https://www.amazon.com/dp/B0GX5QDZ1H) [**FISCAPE 2.2-8.1 Inches Natural Seiryu Stone 5 PCS Mixed Sizes Aquarium Rocks for Aquascaping Iwagumi Layouts Terrariums & Aquarium Dcor**FISCAPE**$26.68**4.5★**▲ 197%**](https://www.amazon.com/dp/B0G5NDDSNK) [**Hygger CO2 13.2LB Seiryu Rock Stone for Aquascaping 4-6 inch Natural Aquarium Landscape Stones for Aquariums Fish Tank Decor Rocks for Landscaping Paludariums & Micro Landscapes**Hygger CO2**$32.41**4.4★**▲ 154%**](https://www.amazon.com/dp/B0DS2BFX29) [**Unocho Aquarium Rocks Natural Seiryu Stone 20lb Aquascaping Rocks for Fish Tank Aquarium Landscaping Decoration Paludarium Amphibian Enclosures(3-10 Inches)**Unocho**$47.26**4.4★**▲ 71%**](https://www.amazon.com/dp/B0CBPGY3CV) [**Voulosimi 44 lb Seiryu Rock Stone for Aquariums Landscaping Model Tank Decoration**Voulosimi**$80.36**4.2★**▲ 32%**](https://www.amazon.com/dp/B08PY2239Q)
**~~View all trending →~~**
## **What buyers say about seiryu stone**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**24%
*“The sizes are pretty decent”*
**Quality-Overall**13%
*“Good quality rocks”*
**Shape/Style**12%
*“Look nice”*
**Value For Money**11%
*“and worth buying”*
**Color**10%
*“coloring is really nice”*
**Design-Overall**5%
*“Super happy with how they turned out in my setup”*
**Advertised Vs Actual Product**5%
*“Overall exactly like advertised”*
**Correct Contents**4%
*“The pieces arrived in a good size range”*
**Weight Heavy**3%
*“Great for decorating aquariums some are heavy so be careful”*
**Fun/Entertainment Experience**2%
*“You will enjoy”*
### **What buyers complain about **
**Size-Overall**31%
*“one very small rock”*
**Advertised Vs Actual Product**25%
*“Not as advertised”*
**Contamination**7%
*“Within a day they all died from chemicals from these man-made stones”*
**Product Condition**5%
*“ITEM WAS USED BEFORE”*
**Defective Material/Parts**5%
*“There are big pieces that you might need to break apart”*
**Value For Money**5%
*“not worth it”*
**Shape/Style**5%
*“Disappointingly Shaped Large Stones”*
**Hard Feel**4%
*“It is dusty”*
**Durability**2%
*“There are big pieces that you might need to break apart”*
**Ease Of Cleaning**2%
*“They do show up pretty dirty”*
### **Top return reasons **
**Size-Overall**46%
**Advertised Vs Actual Product**13%
**Defective Material/Parts**7%
**Value For Money**6%
**Color**6%
**Shape/Style**5%
**Weight Heavy**5%
**Texture/Consistency-Overall**2%
**Functionality-Overall**2%
**Sharpness**1%
## **Common questions**
- **Is seiryu stone profitable to sell on Amazon United States?**
- The niche generates $56K/yr across 18 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is -11.1%. Flapen's verdict: Skip it (47/100).
- **How competitive is the seiryu stone niche?**
- 12 brands and 13 sellers compete. The top 5 products take 59% of clicks and top 5 brands hold 76% of demand.
- **What do buyers complain about in seiryu stone?**
- Top complaints mined from reviews: Size-Overall, Advertised Vs Actual Product, Contamination. The return rate is 1.9%.
- **What does it cost to enter the seiryu stone niche?**
- Listings span $9.86–$80.36; the average listing price is $32.55 (sweet spot $15–$100). The average incumbent carries 497 reviews — the moat a new listing must climb.
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