Small Fish Tank Filter
FailThe top 5 brands take 95% of clicks, so Small Fish Tank Filter is a Fail.
- Flapen Score
- 41 / 100Ranks 3,275 of 3,978 Pet Supplies niches · −10 vs the category median of 5141
- Market size
- $121K/yr71K searches / yr
- 90-day growth
- -11.1%search demand this quarter
- Competition
- 57%top-5 click share · 9 brands · 64 sellers
Flapen Score
Small Fish Tank Filter against its category
The dotted line is the Pet Supplies average. Past it, Small Fish Tank Filter is stronger. Inside it, weaker.
Market
The Small Fish Tank Filter market on Amazon at a glance
Shoppers on Amazon United States searched for Small Fish Tank Filter 71K times last year and spent an estimated $121K. The top 5 brands take 95% of clicks. Flapen scores it 41 out of 100, a Fail.
01 · Demand
An estimated 13.3% of those searches ended in a purchase.
Shoppers searched for this 71K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 13.3% of those searches ended in a purchase. Searches in the last 90 days moved -11.1% against the 90 days before. Searches, conversion and average price together put the market at an estimated $121K a year.
- Searches, last 12 months
- 71K
- Growth, 90 days vs prior 90
- -11.1%
- Conversion, latest week
- 13.3%
- Market size, estimated
- $121Ka year
- Peak month
- August1.5× the quietest month
- Top search term
- aqueon replacement filter cartridges small18K searches a year
02 · Price
A sale here is worth $12.89.
Listings sell for $12.89 on average, from $4.20 to $29.55. Amazon reports units sold in ranges. This niche sold 8K to 10K a year. The average listing sells 500 to 750 of them. At $12.89 that is $6K to $10K a year per listing.
- Average price
- $12.89under the $15 to $100 sweet spot
- Price range
- $4.20–$29.55
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 8K–10K
- Units per listing a year
- 500–750
- Revenue per listing a year
- $6K–$10K
- Returns
- 2.9%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is reviews.
67% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 0.4% of listings are out of stock. The average listing ranks #259 within Fish & Aquatic Pets. It carries 5,091 reviews at 4.50 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 67%
- Prime listings
- 100%
- Out of stock, average day
- 0.4%
- Average rank
- #259in Fish & Aquatic Pets
- Average rating
- 4.50 starsAmazon United States average 4.42 stars
- Average reviews
- 5,091per listing
- Listings tracked
- 27
04 · Newcomers
0 of last year's 5 launches cleared the first-year sales bar.
5 products launched here in the last 12 months. 0 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 44 months on average, so the names here are settling in.
- Launched, last 12 months
- 5
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 44 months
Products
Top Small Fish Tank Filter products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 17, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Aqueon Filter Cartridge Small/6 Pk - Aquarium Filter Cartridge - 6 Count
- Price
- $16.76
- Rating
- 4.8/5
- Reviews
- 2,050
- Age
- 7y ago

Aqueon Replacement Filter Cartridges Small - 6 pack
- Price
- $16.42
- Rating
- 4.7/5
- Reviews
- 9,586
- Age
- 21y ago

Aqueon Aquarium Fish Tank Replacement Filter Cartridges Small - 3 pack
- Price
- $9.42
- Rating
- 4.7/5
- Reviews
- 9,586
- Age
- 21y ago

Tetra Whisper Small Filter Cartridges for Aquariums 6 Count Ready to Use Fits Tetra Whisper Filters for Fish Tanks 1 - 4 Gal
- Price
- $8.62
- Rating
- 4.6/5
- Reviews
- 15,466
- Age
- 14y ago

Aqueon Aquarium Fish Tank Replacement Filter Cartridges Small - 9 pack
- Price
- $22.54
- Rating
- 4.7/5
- Reviews
- 9,586
- Age
- 7y ago
Trending
estimated 90-day click momentum
SmtaqX 8 Pack Small Filter cartridges Replacement Filter cartridges Compatible with Aqueon QuietFlow E Series Internal Power Filter (Size 10) and 1/2.5/5 Gallon Minibow Aquarium Filters
- Price
- $9.93
- Rating
- 4.5/5
- Reviews
- 2
- Age
- 2mo ago

8 Pack Small Filter Cartridge Compatible with Aqueon Filters Aquarium Fish Tank Filter Cartridges Replacement for QuietFlow E Internal Power Filter Size 10 and Minibow Aquarium Filters Size 1/2.5/5
- Price
- $12.33
- Rating
- 0.0/5
- Reviews
- 0
- Age
- 1mo ago

SmtaqX 16 Pack Small Filter cartridges Replacement Filter cartridges Compatible with Aqueon QuietFlow E Series Internal Power Filter (Size 10) and 1/2.5/5 Gallon Minibow Aquarium Filters.
- Price
- $15.92
- Rating
- 5.0/5
- Reviews
- 2
- Age
- 2mo ago

Cunina Small Filter Cartridges Compatible with Aqueon QuietFlow Power Filter Size 10 & E Internal Filter - Replacement Filter Cartridges & Small Fish Tank Filter for Small Fish Tanks 12pcs
- Price
- $14.88
- Rating
- 3.9/5
- Reviews
- 13
- Age
- 2mo ago

Aqueon Aquarium Fish Tank Replacement Filter Cartridges Small - 9 pack
- Price
- $22.54
- Rating
- 4.7/5
- Reviews
- 9,586
- Age
- 7y ago
Newest
by launch date
8 Pack Small Filter Cartridge Compatible with Aqueon Filters Aquarium Fish Tank Filter Cartridges Replacement for QuietFlow E Internal Power Filter Size 10 and Minibow Aquarium Filters Size 1/2.5/5
- Price
- $12.33
- Rating
- 0.0/5
- Reviews
- 0
- Age
- 1mo ago

SmtaqX 8 Pack Small Filter cartridges Replacement Filter cartridges Compatible with Aqueon QuietFlow E Series Internal Power Filter (Size 10) and 1/2.5/5 Gallon Minibow Aquarium Filters
- Price
- $9.93
- Rating
- 4.5/5
- Reviews
- 2
- Age
- 2mo ago

SmtaqX 16 Pack Small Filter cartridges Replacement Filter cartridges Compatible with Aqueon QuietFlow E Series Internal Power Filter (Size 10) and 1/2.5/5 Gallon Minibow Aquarium Filters.
- Price
- $15.92
- Rating
- 5.0/5
- Reviews
- 2
- Age
- 2mo ago

Cunina Small Filter Cartridges Compatible with Aqueon QuietFlow Power Filter Size 10 & E Internal Filter - Replacement Filter Cartridges & Small Fish Tank Filter for Small Fish Tanks 12pcs
- Price
- $14.88
- Rating
- 3.9/5
- Reviews
- 13
- Age
- 2mo ago

Zuqqony 8 Pack Filter Cartridges for Filter Replacement Filter Cartridges for Top Fin EF-S Element and BF5 BETTAFLO
- Price
- $8.77
- Rating
- 4.6/5
- Reviews
- 523
- Age
- 2y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 57% of clicks. Leaders hold, but buyers still shop past them.
Brands
9 rising
Sellers
64
Est. top-5 brand share
95%
Top 20: 100%
Est. top-5 click share
57%
Top 20: 93%
Open market
4%
- Aqueon61%
- Zuqqony13%
- Tetra13%
- SmtaqX4%
- HiTauing4%
- xbbwmrs2%
- Open — no brand owns it (3 brands, 4%)
Demand
Small Fish Tank Filter search demand
Weekly searches over the year, seasonality beneath. Pick a range.
No pronounced peak months · busiest ÷ quietest = 1.5×
Search terms
Top Small Fish Tank Filter search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- aqueon replacement filter cartridges small18K/yr
- aqueon filter small11K/yr
- vibrant life fish tank filter9K/yr
- aqueon small filter cartridges7K/yr
- tetra whisper filter small6K/yr
- small fish tank filter cartridge5K/yr
- aqueon minibow filter3K/yr
- small filter cartridges for fish tank3K/yr
- small aquarium filter cartridge3K/yr
- aqueon small filter3K/yr
Reviews and returns
What reviews say buyers love and hate about Small Fish Tank Filter
We read the reviews and the return reasons for every product selling here.
“Breaks easily”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
17 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Small Fish Tank Filter questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









