Fish Tank Market Report: Sales Volume, Market Share, Leading Brands & Market Trends
Fish Tank sales on Amazon US totaled 46,650 units in July 2026 (▲ 9.9% vs. the prior month), generating an estimated $1,219,269 in revenue across the 50 top-ranked ASINs for this search term. Demand is heavily concentrated at the top of the ranking — the ten best performers capture 82.7% of unit volume and 50.0% of revenue, while a typical listing is priced at $74.06. The keyword itself pulled 73,267 Amazon queries over the same period (▼ 18.3% MoM).
Zooming out to the 12-month window ending July 2026, the fish tank Top 50 moved 447,800 units and $10,991,671 in cumulative sales — an average of 37,317 units and $915,973 per month. Monthly throughput topped out at 46,650 units in July 2026 and dipped to 25,200 in May 2026, leaving the latest reading 28.7% higher than August 2025.
Fish Tank Sales Trend (Trailing 12 Months)
Based on the top 50 ASINs by monthly sales for this keyword
2025/08
2025/09
2025/10
2025/11
2025/12
2026/01
2026/02
2026/03
2026/04
2026/05
2026/06
2026/07
Monthly Sales 2026/07
46.6K
▲ 9.9% MoM
Monthly Revenue 2026/07
$1.2M
▲ 23.4% MoM
Top 10 Market Share 2026/07
82.7%
Fish Tank Market Share & Sales Concentration on Amazon US — July 2026
The most-sold fish tank listing on Amazon US in July 2026 is ASIN B004LO9KSY (Brand: API), which sold 10,000 units at $8.48 apiece — equal to 21.4% of every unit tracked in this report and 25% ahead of the No. 2 listing.
The Top 10 ASINs account for 38,600 units and $610,154 in July 2026 — 82.7% of unit volume and 50.0% of revenue among all 50 ranked ASINs in this report.
Sales Volume of Top ASINs for 'Fish Tank' on Amazon
July 2026
Is 82.7% Top 10 share highly concentrated?
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Top 5 Volume Share breakdown
B004LO9KSY
API TAP WATER CONDITIONER Aquarium Water Conditioner 16-Ounce Bottle
10K
▲ 0.0%vs. prior month
$84.8K
latest month
12-month trend
B091D3DTWS
Tetra Water Cleaner Gravel Siphon for Aquariums Up to 55 Gal
8K
▲ 0.0%vs. prior month
$82.3K
latest month
12-month trend
B00JMABYUO
Fluval 12694 Plant and Shrimp Stratum for Freshwater Fish Tanks, 8.8 lbs. | Aquarium Substrate for Strong Plant Growth, Supports Neutral to Slightly Acidic pH
7K
▼ 12.5%vs. prior month
$127.9K
latest month
12-month trend
B094QH3SRR
Aqua Natural Substrate, Sugar White Sand, 10lb | Aquascaping, Aquariums, Vivariums, Terrariums
5K
▲ 25.0%vs. prior month
$64.8K
latest month
12-month trend
B0GGTJCVR5
BITZEE Aquarium Interactive Fish Tank Toy & Digital Pet, Ages 5+ | Nurture 30 Virtual Fish, Reacts to Touch, Customize with LED Lights, Screen-Free Responsive Play, Birthday Gift for Kids
4K
▲ 900.0%vs. prior month
$160K
latest month
12-month trend
B007TGMLW8
GloFish Aquarium Gravel, Pink/Green/Blue Mix, Complements GloFish Tanks, 5 Pounds
2K
▼ 33.3%vs. prior month
$10.5K
latest month
12-month trend
Unlock to view all Top 50 ASIN competitors and their sales contributions
Best Fish Tank Brands on Amazon US — Top 3 Brand Sales Concentration (July 2026)
API is the best-performing fish tank brand in July 2026, moving 10,000 units across 1 ASIN for 25.9% of Top 10 volume. Tetra follows with 8,500 units (22.0%), ahead of Fluval on 7,000 units (18.1%).
With 9 brands splitting the Top 10 and 66.1% of volume sitting with three of them, this is a concentrated shelf — the leaders hold multiple listings or one very high-velocity ASIN, so a new entrant competes against established review moats rather than an open field. Average selling prices among the leaders run from $8.48 to $16.99, which frames the price band a competing listing has to justify.
Brand share of Top 10 volume
API
1 ASIN in Top 10
25.9%
Units
10K
Revenue
$84.8K
Avg. price
$8.48
B004LO9KSY
$8.48·★4.7·26.8K revsAPI TAP WATER CONDITIONER Aquarium Water Conditioner 16-Ounce Bottle
Units sold10K
Tetra
2 ASINs in Top 10
22.0%
Units
8.5K
Revenue
$92.4K
Avg. price
$13.89
B091D3DTWS
$10.29·★4.5·5.2K revsTetra Water Cleaner Gravel Siphon for Aquariums Up to 55 Gal
Units sold8KB007GCGUUY
$17.49·★4.1·3.2K revsTetra LED Half Moon 1.1 Gallon Fish Tank Kit for Betta Fish | Aquarium Kit Includes Moveable LED Light and 1.1 Gallon Acrylic Tank With Feeding Hole, Ideal for Beginners
Units sold500
Fluval
1 ASIN in Top 10
18.1%
Units
7K
Revenue
$127.9K
Avg. price
$16.99
B00JMABYUO
$16.99·★4.7·18.1K revsFluval 12694 Plant and Shrimp Stratum for Freshwater Fish Tanks, 8.8 lbs. | Aquarium Substrate for Strong Plant Growth, Supports Neutral to Slightly Acidic pH
Units sold7K
Trending Fish Tank Products — Growth Leaders & New Top 10 Entrants
Based on July 2026 data, this shortlist surfaces the two kinds of ASIN worth keeping an eye on — the ones that just broke into the Top 10, and the ones growing fastest month over month. Specifically, one ASIN forced its way in: B0F1T5L1CW booked 500 units at $49.99, with ▲ 66.7% MoM change. On the growth side, B0GGTJCVR5 leads positive momentum with ▲ 900.0% MoM growth on 4K units, with B0GWCP1LNN close behind at ▲ 300.0% MoM on 200 units.
The two signals carry different weight. A fresh entrant means share has already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date. A steep growth rate works as the earlier warning: it marks demand that is still compounding, usually a month or two before the ranking catches up to it.
B0F1T5L1CW
3 Gallon Glass Small Fish Tank, Betta Fish Tank Starter Kit with Filter, Lights,Lid.
Price
$49.99
Rating
4.3
Reviews
345
Latest month sales
B0GGTJCVR5
BITZEE Aquarium Interactive Fish Tank Toy & Digital Pet, Ages 5+ | Nurture 30 Virtual Fish, Reacts to Touch, Customize with LED Lights, Screen-Free Responsive Play, Birthday Gift for Kids
Price
$39.99
Rating
4.1
Reviews
138
Latest month sales
B0GWCP1LNN
2.2 Gallon Small Fish Tank, Betta Fish Aquariums Black | with 4-in-1 Filter Pump, LED Light, Temperature Display, Fan & Surface Intake Design, for Home Office, Beginner Friendly
Unlock to view ASIN details and product titles
Price
$57.99
Rating
4.3
Reviews
21
Latest month sales
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