20 Gallon Tank
weak search conversion (0.3%) — 20 Gallon Tank doesn't clear our bar today.
Flapen Score
Ranks 3,590 of 3,978 Pet Supplies niches · −14 vs the category median of 51
Is 20 Gallon Tank profitable on Amazon?
According to Flapen's Amazon United States niche tracking, 20 Gallon Tank is a $89K/yr Amazon United States market (208K searches/yr). The top 5 brands hold 83% of demand. Demand peaks in Sep. Verdict: Skip it — 37/100.
20 Gallon Tank: the Amazon niche in one read
Everything a seller checks before entering, in three answers.
Is the demand real?
Not really. Search demand moved +8.1% over the last 90 days and 0.3% of searches end in a purchase.
$89K
revenue / yr
Who owns the niche?
The top 5 brands hold 83% of demand, so 17% of the market is open.
17%
open market share
Is there a way in?
Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.3★ — the gap to enter on.
0/100
page quality · 17 products
Top 20 Gallon Tank 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
AQUANEAT Aquarium Net with Extendable Long Handle Adjustable Wastes Skimming Cleaning Tools for Fish Tanks 3 inch
- Price
- $3.54
- Rating
- 4.5/5
- Reviews
- 1,853
- Age
- 4y ago
Tetra Aquarium 20 Gallon Complete Tropical Fish Tank Kit With LED Lighting And Decor For Freshwater Fish
- Price
- $123.28
- Rating
- 4.3/5
- Reviews
- 3,796
- Age
- 10y ago
Magnetic Aquarium Cover lid Fish Tank lid Anti-Jumping net Cover mesh lid Aquarium Hood
- Price
- $18.64
- Rating
- 4.1/5
- Reviews
- 492
- Age
- 2y ago
Aqueon Aquarium 20 Gallon Long
- Price
- $150.15
- Rating
- 4.0/5
- Reviews
- 544
- Age
- 15y ago
Tetra Glass Aquarium 29 Gallons Rectangular Fish Tank
- Price
- $131.16
- Rating
- 4.6/5
- Reviews
- 998
- Age
- 6y ago
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
- Price
- $185.20
- Rating
- 3.8/5
- Reviews
- 196
- Age
- 6mo ago
Aqueon Glass 20 Gallon Long Tank for Aquariums & Terrariums
- Price
- $87.32
- Rating
- 0.0/5
- Reviews
- 0
- Age
- 1mo ago
AQUANEAT Aquarium Net with Extendable Long Handle Adjustable Wastes Skimming Cleaning Tools for Fish Tanks 3 inch
- Price
- $3.54
- Rating
- 4.5/5
- Reviews
- 1,853
- Age
- 4y ago
20 Gallon Glass Fish Tank Standard Aquarium Fish Tank Rimless Low Iron Aquarium for Betta/Turtle/Goldfish/Snails/Shrimp and Aquatic Planting
- Price
- $197.80
- Rating
- 5.0/5
- Reviews
- 8
- Age
- 5mo ago
SubstrateSource 20 Gallon Glass Aquarium - 24 x 12.5 x 17.25 in - Large Clear Rectangular Rimmed Freshwater/Saltwater Fish Tank for Betta Goldfish Guppy Shrimp for Home or Office Aquascaping
- Price
- $89.57
- Rating
- 4.2/5
- Reviews
- 32
- Age
- 10mo ago
Newest
by launch dateAqueon Glass 20 Gallon Long Tank for Aquariums & Terrariums
- Price
- $87.32
- Rating
- 0.0/5
- Reviews
- 0
- Age
- 1mo ago
20 Gallon Glass Fish Tank Standard Aquarium Fish Tank Rimless Low Iron Aquarium for Betta/Turtle/Goldfish/Snails/Shrimp and Aquatic Planting
- Price
- $197.80
- Rating
- 5.0/5
- Reviews
- 8
- Age
- 5mo ago
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
- Price
- $185.20
- Rating
- 3.8/5
- Reviews
- 196
- Age
- 6mo ago
Ultra Clear Glass Aquarium Thickened Large Fish Tank -Suitable for High-end Fish Enthusiasts (29 Gallon Tank)
- Price
- $126.91
- Rating
- 4.0/5
- Reviews
- 56
- Age
- 10mo ago
SubstrateSource 20 Gallon Glass Aquarium - 24 x 12.5 x 17.25 in - Large Clear Rectangular Rimmed Freshwater/Saltwater Fish Tank for Betta Goldfish Guppy Shrimp for Home or Office Aquascaping
- Price
- $89.57
- Rating
- 4.2/5
- Reviews
- 32
- Age
- 10mo ago
Competition: brands, sellers & click share
The top 5 products take 66% of clicks — established leaders, but buyers still shop beyond them.
Brands
12 falling
Sellers
20
Top-5 brand share
83%
Top 20: 100%
Top-5 click share
66%
Top 20: 100%
Open market
14%
- AQUANEAT36%
- Tetra22%
- Aqueon14%
- NestBasics7%
- SubstrateSource4%
- Lifegard3%
- Open — no brand owns it (6 brands, 14%)
20 Gallon Tank demand & seasonality
Weekly search volume, with the niche's key stats alongside.
Peak months: Sep · busiest ÷ quietest = 3.2×
Top 20 Gallon Tank search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.
- 20 gallon tank80K/yr
- 20 gallon long fish tank54K/yr
- 20 gallon long aquarium12K/yr
- 20 gallon fish tank with lid8K/yr
- 20 gallon fish tank long6K/yr
- 20 gal tank5K/yr
- fish tank 15+ gallon3K/yr
- 20 gallon aquarium tank4K/yr
- 20 gallon tall fish tank6K/yr
- 20 gal long fish tank4K/yr
What reviews say buyers love and hate about 20 Gallon Tank
What buyers mention most, as a share of all reviews.
What buyers love
72% of reviews“Great Quality”
“Good deal”
“As expected”
“Great size”
“it's attractive”
What buyers complain about
66% of reviews“realized the filter was terrible”
“Leaks around lid. not the tank”
“The adhesive is very weak”
“Misleading”
“Basically, no instructions”
20 Gallon Tank return rate & reasons
Why buyers send it back, as a share of all return requests.
3.2%
Return rate
61%
Fixable by listing
The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.
Common 20 Gallon Tank 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.
