---
title: "Fish Tank — $5.2M/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/pet-supplies/fish-tank"
last_updated: "2026-07-22T21:29:51.034Z"
locale: en
meta:
description: "Niche score 58/100 · $5.2M/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 58/100 · $5.2M/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Fish Tank — $5.2M/yr Amazon US Niche (2026) - Flapen"
---
# **fish tank**
**Worth a look**
Shows a $5.2M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 98Growth 20Conversion 9Competition 85Returns 25Price range 23Avg price 85Brand share 78Review moat 47Quality gap 83
**Market size**
**Incredible****$5.2M**
$5.2M/yr · 10.0M searches
**Competition**
**Great****30%**
top-5 click share — an open shelf
**Avg price**
**Great****$72.90**
avg listing price — sweet spot $15–$100
**Quality gap**
**Great****4.2★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Great****57%**
top-5 brand share — no brand owns this niche
**Review moat**
**Okay****1,778.36**
avg incumbent reviews — the moat a new listing must climb
**Returns**
**Okay****6.0%**
return rate — above 6% kills the launch gate
**Price range**
**Bad****$2.92–$368.31**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Bad****-10.5%**
90-day search growth — must beat 0% to launch
**Conversion**
**Bad****0.7%**
search→purchase rate — share of searches ending in a sale
According to Flapen's Amazon United States niche tracking, fish tank is a $5.2M/yr Amazon United States market (10.0M searches/yr). The top 5 brands hold 57% of demand. Verdict: Worth a look — 58/100.
Data updated Jul 17, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **fish tank market data**
- **Units sold / yr**
- **60K–80K**
- avg 500–750/product
- **Revenue / yr**
- **$4.4M–$5.8M**
- units × avg price
- **Launch success**
- **90%**
- 18 of 20 new (360d)
- **Conversion rate**
- **0.7%**
- **Avg BSR**
- **#23**
- **Page quality**
- **0%**
- **Prime**
- **97%**
- **Sponsored**
- **82%**
- **Out of stock**
- **8.9%**
- **Avg brand age**
- **37 months**
- **Avg seller age**
- **152 days**
## **Competition & brand share**
Clicks spread well past the top 5 (30% combined) — an open shelf where new products get seen.
**Brands**
**30 **▼falling
**Sellers**
**40**
**Top-5 brand share**
**57%**
Top 20: 94%
**Top-5 click share**
**30%**
Top 20: 62%
**Open market**
**37%**
- Tetra21% - AQUANEAT11% - Vehipa10% - Vimvins10% - Penn-Plax6% - Aqueon6%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -10.5% search growth over the last 90 days.
250K150KHoliday '24Prime Day '25Black Friday '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.2×
[**Open Trend **](https://flapen.com/research/us/pet-supplies/fish-tank/trend)
## **Top fish tank search terms**
- **fish tank**3.4M/yr-13.4%0.3% conv. - **aquarium**1.4M/yr+0.5%0.1% conv. - **10 gallon fish tank**659K/yr-18.5%0.4% conv. - **betta fish tank**643K/yr-13.0%0.7% conv. - **5 gallon fish tank**535K/yr-18.4%0.4% conv. - **20 gallon fish tank**524K/yr-14.7%0.3% conv. - **small fish tank**370K/yr-2.0%1.1% conv. - **beta fish aquariums**388K/yr-14.4%0.9% conv. - **fish bowl**325K/yr+5.7%0.5% conv. - **fish tanks**298K/yr-14.3%0.2% conv. [**All search terms **](https://flapen.com/research/us/pet-supplies/fish-tank/search-terms)
## **Top fish tank 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%3%$155K6%$310K9%$466K12%$621K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 67 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**AQUANEAT Fish Tank 1 Gallon Betta Fish Tank Small Aquarium Kit with LED Light and Water Filter Pump**AQUANEAT**$25.48**3.7★201 rev](https://www.amazon.com/dp/B0F17J6B2M) [2**Penn-Plax Quick-Net Aquarium Fish Net - 4 x 3 in Fine Mesh 10 in Vinyl-Covered Braided Handle - Small Aquarium Cleaning Tool for Gentle Fish Handling - Use in Freshwater & Saltwater Tanks - Blue**Penn-Plax**$2.92**4.6★33,428 rev](https://www.amazon.com/dp/B0002APXKA) [3**Vehipa Fish Tank 2.4 Gallon Fish Aquarium Fish Tank Starter kit with Smart Humidifier Temperature Display 7-Color Lighting 3 in 1 Quiet Pump with Filteration & Oxygenation & Circulation**Vehipa**$55.28**4.1★441 rev](https://www.amazon.com/dp/B0F32CDJMK) [4**3.5 Gallon Betta Fish Tank All in One Aquarium Starter Kits with Back Filter Adjustable Pump 25W Heater LED Thermometer LED Light with Timer & Water Changer Kit Gifts for Mom Wife**eWonLife**$68.69**4.2★245 rev](https://www.amazon.com/dp/B0GBX2KK32) [5**Tetra Aquarium 20 Gallon Complete Tropical Fish Tank Kit With LED Lighting And Decor For Freshwater Fish**Tetra**$123.28**4.3★3,796 rev](https://www.amazon.com/dp/B013BXDZ90)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**VIVOHOME 2 Gallon Smart Fish Tank with APP Control and Auto Feeder**VIVOHOME**$64.85**41 rev2mo ago](https://www.amazon.com/dp/B0GL1H59MK) [**Vehipa Fish Tank Smart Fish Aquarium Kit 4.2 Gallon with Auto Feeder 4-in-1 Silent Pump Adjustable Lighting Temperature Display & Humidifier for Desktop Office Room**Vehipa**$106.39**16 rev3mo ago](https://www.amazon.com/dp/B0GKGDFBPK) [**Swimsync Fish Tank Starter Kit 3 Gallon Smart Aquarium for Beta 3-in-1 Silent Water Pump with Filtration & Circulation & Oxygenation Temperature Display 7 Colors LED Lights (Black)**SWIMSYNC**$52.14**60 rev4mo ago](https://www.amazon.com/dp/B0GFCNQ9QJ) [**Coospider 10 Gallon Glass Fish Tank Aquarium Starter Kit Simple Self-Cleaning Aquarium with 3-Color LED Lights Quiet Filter Pump Temperature Monitoring for Fish Shrimp Kids Gift Ideas**COOSPIDER**$128.39**196 rev4mo ago](https://www.amazon.com/dp/B0GQ9L16BQ) [**3.5 Gallon Betta Fish Tank All in One Aquarium Starter Kits with Back Filter Adjustable Pump 25W Heater LED Thermometer LED Light with Timer & Water Changer Kit Gifts for Mom Wife**eWonLife**$68.69**245 rev5mo ago](https://www.amazon.com/dp/B0GBX2KK32)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Coospider 20 Gallon Glass Fish Tank Aquarium Starter Kit Simple Self-Cleaning Aquarium with 3-Color LED Lights with Quiet Filter Pump with Temperature Monitoring for Fish Shrimp Kids Gift Ideas**COOSPIDER**$185.20**3.8★**▲ 293%**](https://www.amazon.com/dp/B0GFK4FMMT) [**VIVOHOME 2 Gallon Smart Fish Tank with APP Control and Auto Feeder**VIVOHOME**$64.85**4.2★**▲ 292%**](https://www.amazon.com/dp/B0GL1H59MK) [**Vehipa Fish Tank Smart Fish Aquarium Kit 4.2 Gallon with Auto Feeder 4-in-1 Silent Pump Adjustable Lighting Temperature Display & Humidifier for Desktop Office Room**Vehipa**$106.39**3.1★**▲ 287%**](https://www.amazon.com/dp/B0GKGDFBPK) [**AQUASMITH Betta Fish Tank 2 Gallon All-in-One Aquarium Kit with Filtration & LED Light Self-Cleaning Aquarium for Beginners Kids Gifts for MenTeen Boys**AQUASMITH**$62.79**4.6★**▲ 279%**](https://www.amazon.com/dp/B0FK1MC9R5) [**Coospider 10 Gallon Glass Fish Tank Aquarium Starter Kit Simple Self-Cleaning Aquarium with 3-Color LED Lights Quiet Filter Pump Temperature Monitoring for Fish Shrimp Kids Gift Ideas**COOSPIDER**$128.39**3.8★**▲ 279%**](https://www.amazon.com/dp/B0GQ9L16BQ)
**~~View all trending →~~**
## **What buyers say about fish tank**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**13%
*“Love the size”*
**Quality-Overall**11%
*“Overall quality is reasonable”*
**Filtration**11%
*“Great filtration system”*
**Value For Money**10%
*“Good deal”*
**Design-Overall**8%
*“It's very stylish”*
**Ease Of Cleaning**4%
*“Easy to clean”*
**Advertised Vs Actual Product**4%
*“Exactly as advertised”*
**Brightness/Shine/Glow**4%
*“Bright light”*
**Assembly/Installation**3%
*“Easy to set up”*
**Ease Of Use**3%
*“easy enough to follow”*
### **What buyers complain about **
**Filtration**18%
*“Filter did not work”*
**Size-Overall**11%
*“Bigger than I imagined”*
**Durability**7%
*“Broke”*
**Quality-Overall**7%
*“Bad quality”*
**Leak-Proof**6%
*“Tank is leaking”*
**Instructions/User Manual/Troubleshooting**5%
*“No manual”*
**Value For Money**3%
*“for the price you get better value then something similar in a big box store”*
**Advertised Vs Actual Product**2%
*“False advertising”*
**Functionality-Overall**2%
*“it does not do the job at all”*
**Ease Of Cleaning**2%
*“Hard to clean”*
### **Top return reasons **
**Size-Overall**48%
**Filtration**13%
**Leak-Proof**6%
**Value For Money**5%
**Advertised Vs Actual Product**4%
**Defective Material/Parts**4%
**Material Quality**3%
**Functionality-Overall**3%
**Quality-Overall**2%
**Product Condition**2%
## **Common questions**
- **Is fish tank profitable to sell on Amazon United States?**
- The niche generates $5.2M/yr across 67 tracked products. 18 of 20 products launched in the last 360 days are still selling. 90-day search growth is -10.5%. Flapen's verdict: Worth a look (58/100).
- **How competitive is the fish tank niche?**
- 30 brands and 40 sellers compete. The top 5 products take 30% of clicks and top 5 brands hold 57% of demand.
- **What do buyers complain about in fish tank?**
- Top complaints mined from reviews: Filtration, Size-Overall, Durability. The return rate is 6.0%.
- **When does demand for fish tank peak?**
- Demand is steady year-round — the busiest month runs 1.2× the quietest.
- **What does it cost to enter the fish tank niche?**
- Listings span $2.92–$368.31; the average listing price is $72.90 (sweet spot $15–$100). The average incumbent carries 1,778 reviews — the moat a new listing must climb.
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