40 Gallon Fish Tank
weak search conversion (0.3%) — 40 Gallon Fish 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 40 Gallon Fish Tank profitable on Amazon?
According to Flapen's Amazon United States niche tracking, 40 Gallon Fish Tank is a $476K/yr Amazon United States market (1.0M searches/yr). The top 5 brands hold 95% of demand. Demand peaks in Jul. Verdict: Skip it — 37/100.
40 Gallon Fish 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 -8.9% over the last 90 days and 0.3% of searches end in a purchase.
$476K
revenue / yr
Who owns the niche?
The top 5 brands hold 95% of demand, so 5% of the market is open.
5%
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 · 15 products
Top 40 Gallon Fish 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
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
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
Tetra Complete LED Aquarium 55 Gallons Includes LED Lighting Filtration Heater and Accessories
- Price
- $368.31
- Rating
- 4.2/5
- Reviews
- 828
- Age
- 4y ago
Tetra Glass Aquarium 29 Gallons Rectangular Fish Tank
- Price
- $131.16
- Rating
- 4.6/5
- Reviews
- 998
- Age
- 6y ago
Tetra Glass Aquarium 55 Gallons Rectangular Fish Tank (NV52018)
- Price
- $270.59
- Rating
- 4.6/5
- Reviews
- 998
- Age
- 6y ago
Trending
90-day click momentumMagnetic 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 Starter Kit with Smart Clean Filtration and LED Lighting Freshwater and Saltwater Fish Perfect for Tetras Guppies Platies 10-Gallon
- Price
- $117.27
- Rating
- 4.3/5
- Reviews
- 2,482
- Age
- 1y ago
Multi-Tier Aquarium Stand for 2037 Gallon Fish Tanks Heavy-Duty 29/30/40 Gallon Fish Tank Stand with Storage Cabinet Curved Safety Frame Steel Frame 750 lbs Capacity Reptile & Terrarium Tank Stand for Home Office
- Price
- $129.08
- Rating
- 4.4/5
- Reviews
- 7
- Age
- 7mo ago
Allcolor Ultra Clear Rimless Aquarium Tank 6-60 gallons Low Iron Glass (4.6Gal - Top Glass Canopy)
- Price
- $61.39
- Rating
- 4.2/5
- Reviews
- 347
- 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
Newest
by launch dateMulti-Tier Aquarium Stand for 2037 Gallon Fish Tanks Heavy-Duty 29/30/40 Gallon Fish Tank Stand with Storage Cabinet Curved Safety Frame Steel Frame 750 lbs Capacity Reptile & Terrarium Tank Stand for Home Office
- Price
- $129.08
- Rating
- 4.4/5
- Reviews
- 7
- Age
- 7mo 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
Aqueon Aquarium Starter Kit with Smart Clean Filtration and LED Lighting Freshwater and Saltwater Fish Perfect for Tetras Guppies Platies 10-Gallon
- Price
- $117.27
- Rating
- 4.3/5
- Reviews
- 2,482
- Age
- 1y ago
Aqueon Aquarium Starter Kit with Smart Clean Filtration and LED Lighting Freshwater and Saltwater Fish 20-Gallon
- Price
- $179.13
- Rating
- 4.3/5
- Reviews
- 2,482
- Age
- 1y ago
Verano 55-75 Gallon Aquarium Stand with Storage Cabinet Fish Tank Stand with Power Outlets & LED Light Wooden Turtle Tank 52 inch x 19.7-inch Desktop Heavy Duty Steel Frame 1100LBS Capacity (Black)
- Price
- $120.97
- Rating
- 4.5/5
- Reviews
- 48
- Age
- 1y ago
Competition: brands, sellers & click share
The top 5 products capture 76% of clicks — a locked-up shelf that new listings rarely crack.
Brands
9 falling
Sellers
15
Top-5 brand share
95%
Top 20: 100%
Top-5 click share
76%
Top 20: 100%
Open market
4%
- Tetra50%
- NestBasics20%
- XDPET15%
- Aqueon8%
- PAIZOO2%
- Verano Garden2%
- Open — no brand owns it (3 brands, 4%)
40 Gallon Fish Tank demand & seasonality
Weekly search volume, with the niche's key stats alongside.
Peak months: Jul · busiest ÷ quietest = 1.5×
Top 40 Gallon Fish Tank search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.
- 40 gallon fish tank178K/yr
- 30 gallon fish tank163K/yr
- 50 gallon fish tank135K/yr
- 75 gallon fish tank122K/yr
- 55 gallon fish tank122K/yr
- 55 gallon aquarium41K/yr
- 29 gallon fish tank46K/yr
- 40 gallon aquarium37K/yr
- 60 gallon fish tank34K/yr
- 29 gallon aquarium29K/yr
What reviews say buyers love and hate about 40 Gallon Fish Tank
What buyers mention most, as a share of all reviews.
What buyers love
69% of reviews“Great quality”
“Very worth the price”
“Easy to read”
“Works great”
“Great size”
What buyers complain about
63% of reviews“Display not turning on”
“realized the filter was terrible”
“Stopped working after 6 months”
“Showed up with a dead battery”
“Missing Adhesive”
40 Gallon Fish Tank return rate & reasons
Why buyers send it back, as a share of all return requests.
1.8%
Return rate
31%
Fixable by listing
The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.
Common 40 Gallon Fish 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.
