5 Gallon Fish Tank Filter
soft demand (-10.5% this quarter) — 5 Gallon Fish Tank Filter doesn't clear our bar today.
Flapen Score
Ranks 2,652 of 3,978 Pet Supplies niches · −5 vs the category median of 51
Is 5 Gallon Fish Tank Filter profitable on Amazon?
According to Flapen's Amazon United States niche tracking, 5 Gallon Fish Tank Filter is a $102K/yr Amazon United States market (217K searches/yr). The top 5 brands hold 70% of demand. Demand peaks in Jul–Aug. Verdict: Skip it — 46/100.
5 Gallon Fish Tank Filter: the Amazon niche in one read
Everything a seller checks before entering, in three answers.
Is the demand real?
Not really. Search demand moved -10.5% over the last 90 days and 4.3% of searches end in a purchase.
$102K
revenue / yr
Who owns the niche?
The top 5 brands hold 70% of demand, so 30% of the market is open.
30%
open market share
Is there a way in?
Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.1★ — the gap to enter on.
0/100
page quality · 32 products
Top 5 Gallon Fish Tank Filter products & what they sell for
Every tracked product — its share of the shelf, its review moat, and what it sells for.
Top sellers
by 90-day click share
Tetra Whisper 4i Internal Power Filter Filtration for Aquariums Between 1 and 4 Gallons
- Price
- $12.35
- Rating
- 4.3/5
- Reviews
- 22,392
- Age
- 7y ago
NICREW Slim Aquarium Filter Quiet Fish Tank HOB Filters for up to 5 Gallon Aquariums Adjustable Flow 42 GPH 3W
- Price
- $12.34
- Rating
- 4.1/5
- Reviews
- 2,763
- Age
- 2y ago
Tetra Whisper Internal Power Filter Medium Bio-Bag Filter Cartridges 3-Stage Filtration 5-10 gal
- Price
- $15.61
- Rating
- 4.3/5
- Reviews
- 22,392
- Age
- 22y ago
DaToo Aquarium Power Filter In-Tank Ultra Silent Small Fish Tank Filter 3W For Aquarium 1 to 10 Gallon Tank 1 Yr Warranty
- Price
- $7.75
- Rating
- 4.0/5
- Reviews
- 3,198
- Age
- 8y ago
Novique HOB Slim Aquarium Filter for Up to 5 Gallon Tank Ultra-Quiet Fish Tank Power Filter Flow Adjustable Suitable for Saltwater and Freshwater 42 GPH 3W
- Price
- $8.96
- Rating
- 3.9/5
- Reviews
- 119
- Age
- 11mo ago
Trending
90-day click momentum
Carefree Fish Aquarium Small Sponge Bubble Filter with Fish Poops Collector Quiet for 3~8Gal Fish Tank for Saltwater and Freshwater(Not Include Air Pump)
- Price
- $9.82
- Rating
- 4.0/5
- Reviews
- 30
- Age
- 3mo ago
12-Pack EF-S Replacement Filter Cartridges for BF5 BettaFlo Aquarium Professional Triple Filtration to Keep Water Crystal Clear & Fish Healthy High-Density Activated Carbon Refills for Fish Tank
- Price
- $7.24
- Rating
- 4.1/5
- Reviews
- 75
- Age
- 5mo ago
Novique HOB Slim Aquarium Filter for Up to 5 Gallon Tank Ultra-Quiet Fish Tank Power Filter Flow Adjustable Suitable for Saltwater and Freshwater 42 GPH 3W
- Price
- $8.96
- Rating
- 3.9/5
- Reviews
- 119
- Age
- 11mo ago
QiQiWader Small Aquarium Filter Fish Tank Filter Suitable for 3-10 Gallon Fish Tanks 3W 80GPH with Two Modes Switching Function.
- Price
- $16.80
- Rating
- 4.1/5
- Reviews
- 98
- Age
- 9mo ago
Tetra Whisper Internal Power Filter Medium Bio-Bag Filter Cartridges 3-Stage Filtration 5-10 gal
- Price
- $15.61
- Rating
- 4.3/5
- Reviews
- 22,392
- Age
- 22y ago
Newest
by launch dateCarefree Fish Aquarium Small Sponge Bubble Filter with Fish Poops Collector Quiet for 3~8Gal Fish Tank for Saltwater and Freshwater(Not Include Air Pump)
- Price
- $9.82
- Rating
- 4.0/5
- Reviews
- 30
- Age
- 3mo ago
12-Pack EF-S Replacement Filter Cartridges for BF5 BettaFlo Aquarium Professional Triple Filtration to Keep Water Crystal Clear & Fish Healthy High-Density Activated Carbon Refills for Fish Tank
- Price
- $7.24
- Rating
- 4.1/5
- Reviews
- 75
- Age
- 5mo ago
QiQiWader Small Aquarium Filter Fish Tank Filter Suitable for 3-10 Gallon Fish Tanks 3W 80GPH with Two Modes Switching Function.
- Price
- $16.80
- Rating
- 4.1/5
- Reviews
- 98
- Age
- 9mo ago
Novique HOB Slim Aquarium Filter for Up to 5 Gallon Tank Ultra-Quiet Fish Tank Power Filter Flow Adjustable Suitable for Saltwater and Freshwater 42 GPH 3W
- Price
- $8.96
- Rating
- 3.9/5
- Reviews
- 119
- Age
- 11mo ago
Petta Quiet Aquarium Filter for Betta Slim HOB Fish Tank Filter for 3-10 Gal Planted Aquariums & Aquascaping with 1 Pre-Filter Sponge Adjustable Flow250L/H
- Price
- $10.50
- Rating
- 3.5/5
- Reviews
- 76
- Age
- 2y ago
Competition: brands, sellers & click share
The top 5 products take 52% of clicks — established leaders, but buyers still shop beyond them.
Brands
20 falling
Sellers
35
Top-5 brand share
70%
Top 20: 100%
Top-5 click share
52%
Top 20: 87%
Open market
23%
- Tetra23%
- NICREW22%
- DaToo9%
- Aqueon8%
- Pawfly8%
- Novique7%
5 Gallon Fish Tank Filter demand & seasonality
Weekly search volume, with the niche's key stats alongside.
Peak months: Jul, Aug · busiest ÷ quietest = 2.0×
Top 5 Gallon Fish Tank Filter search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.
- 3 gallon fish tank filter28K/yr
- betta fish filter18K/yr
- mini aquarium filter20K/yr
- 5 gallon tank filter16K/yr
- 2.5 gallon fish tank filter17K/yr
- betta tank filter14K/yr
- 2 gallon fish tank filter16K/yr
- beta fish filter11K/yr
- mini fish tank filter11K/yr
- 5 gallon filter9K/yr
What reviews say buyers love and hate about 5 Gallon Fish Tank Filter
What buyers mention most, as a share of all reviews.
What buyers love
78% of reviews“Excellent filter”
“Very affordable”
“Amazing fit”
“Great looking product”
“Cleaning is straightforward”
What buyers complain about
73% of reviews“Breaks easily”
“Does not filter good”
“it's most likely not going to fit very well”
“Complete garbage”
“Not effective”
5 Gallon Fish Tank Filter return rate & reasons
Why buyers send it back, as a share of all return requests.
3.2%
Return rate
56%
Fixable by listing
The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.
Common 5 Gallon Fish Tank Filter questions
The questions sellers ask about this niche, answered from the tracked metrics.
Related niches
Same-category niches scoring near this one — the next ones worth researching.
Best Flapen score
The highest-scoring niches we track right now, across every category.
