40 Gallon Fish Tank
FailBuyers convert on only 0.3% of searches, so 40 Gallon Fish Tank is a Fail.
- Flapen Score
- 37 / 100Ranks 3,590 of 3,978 Pet Supplies niches · −14 vs the category median of 5137
- Market size
- $476K/yr1.0M searches / yr
- 90-day growth
- -8.9%search demand this quarter
- Competition
- 76%top-5 click share · 9 brands · 15 sellers
Flapen Score
40 Gallon Fish Tank against its category
The dotted line is the Pet Supplies average. Past it, 40 Gallon Fish Tank is stronger. Inside it, weaker.
Market
The 40 Gallon Fish Tank market on Amazon at a glance
Shoppers on Amazon United States searched for 40 Gallon Fish Tank 1.0M times last year and spent an estimated $476K. The top 5 brands take 95% of clicks. Demand peaks in Jul. Flapen scores it 37 out of 100, a Fail.
01 · Demand
An estimated 0.3% of those searches ended in a purchase.
Shoppers searched for this 1.0M times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 0.3% of those searches ended in a purchase. Searches in the last 90 days moved -8.9% against the 90 days before. Searches, conversion and average price together put the market at an estimated $476K a year.
- Searches, last 12 months
- 1.0M
- Growth, 90 days vs prior 90
- -8.9%
- Conversion, latest week
- 0.3%
- Market size, estimated
- $476Ka year
- Peak month
- July1.5× the quietest month
- Top search term
- 40 gallon fish tank178K searches a year
02 · Price
A sale here is worth $181.95.
Listings sell for $181.95 on average, from $9.62 to $534.25. Amazon reports units sold in ranges. This niche sold 3K to 3K a year. The average listing sells 0 to 100 of them. At $181.95 that is $0 to $18K a year per listing.
- Average price
- $181.95above the $15 to $100 sweet spot
- Price range
- $9.62–$534.25
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 3K–3K
- Units per listing a year
- 0–100
- Revenue per listing a year
- $0–$18K
- Returns
- 1.8%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. 93% ship with Prime. On an average day, 7.9% of listings are out of stock. The average listing ranks #76 within Fish & Aquatic Pets. It carries 1,557 reviews at 4.33 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 67%
- Prime listings
- 93%
- Out of stock, average day
- 7.9%
- Average rank
- #76in Fish & Aquatic Pets
- Average rating
- 4.33 starsAmazon United States average 4.42 stars
- Average reviews
- 1,557per listing
- Listings tracked
- 15
04 · Newcomers
1 of last year's 2 launches cleared the first-year sales bar.
2 products launched here in the last 12 months. 1 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 36 months on average, so the names here are settling in.
- Launched, last 12 months
- 2
- Successful launches
- 1Amazon's first-year sales bar
- Average brand age
- 36 months
Products
Top 40 Gallon Fish Tank 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
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
estimated 90-day click momentum
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 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 date
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

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
Competition: brands, sellers & click share
The top 5 products take an estimated 76% of clicks. A locked shelf that new listings rarely crack.
Brands
9 falling
Sellers
15
Est. top-5 brand share
95%
Top 20: 100%
Est. 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%)
Demand
40 Gallon Fish Tank search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Jul · busiest ÷ quietest = 1.5×
Search terms
Top 40 Gallon Fish Tank search terms shoppers use
The exact words shoppers type, with estimated 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
Reviews and returns
What reviews say buyers love and hate about 40 Gallon Fish Tank
We read the reviews and the return reasons for every product selling here.
“Display not turning on”
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.
18 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 40 Gallon Fish Tank 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









