Fish Tank Accessories Market Report: Sales Volume, Market Share, Leading Brands & Market Trends
Fish Tank Accessories sales on Amazon US totaled 184,000 units in July 2026 (▼ 6.3% vs. the prior month), generating an estimated $2,223,620 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 41.3% of unit volume and 37.8% of revenue, while a typical listing is priced at $12.01. The keyword itself pulled 40,769 Amazon queries over the same period (▲ 27.9% MoM).
Zooming out to the 12-month window ending July 2026, the fish tank accessories Top 50 moved 1,955,350 units and $22,588,363 in cumulative sales — an average of 162,946 units and $1,882,364 per month. Monthly throughput topped out at 196,400 units in June 2026 and dipped to 110,100 in May 2026, leaving the latest reading 19.4% higher than August 2025.
Fish Tank Accessories 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
184K
▼ 6.3% MoM
Monthly Revenue 2026/07
$2.2M
▲ 0.2% MoM
Top 10 Market Share 2026/07
41.3%
Fish Tank Accessories Market Share & Sales Concentration on Amazon US — July 2026
The most-sold fish tank accessories listing on Amazon US in July 2026 is ASIN B004LO9KSY (Brand: API), which sold 10,000 units at $8.48 apiece — equal to 5.4% of every unit tracked in this report and 11% ahead of the No. 2 listing.
The Top 10 ASINs account for 76,000 units and $839,630 in July 2026 — 41.3% of unit volume and 37.8% of revenue among all 50 ranked ASINs in this report.
Sales Volume of Top ASINs for 'Fish Tank Accessories' on Amazon
July 2026
Is 41.3% Top 10 share highly concentrated?
Ask AI to evaluate competition, market structure, and entry opportunities using ’s tracked Amazon sales, ranking, and keyword data.
Powered by ASINSIGHT MCP · Grounded in ASINSIGHT Amazon data
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
B000R9WRIC
Tetra Goldfish Flakes Fish Food, 7.06 oz | Nutritionally Balanced Daily Diet for Goldfish and Small Koi, Color-Enhancing, Highly Digestible, Clean & Clear Water Formula
9K
▲ 0.0%vs. prior month
$89.7K
latest month
12-month trend
B0D2RG3LXR
AAwipes 8-in-1 Aquarium Test Kit for Fish Tanks - Quick & Accurate Water Testing Strips for Aquariums & Ponds. Tests pH, Ammonia, Alkalinity, Hardness, Chlorine, etc. (K02-50)
9K
▲ 12.5%vs. prior month
$86.1K
latest month
12-month trend
B00025694O
Seachem Prime -500 ml/ 17 fl. oz. | Chemical Remover and Detoxifier
9K
▲ 0.0%vs. prior month
$149.6K
latest month
12-month trend
B091D3DTWS
Tetra Water Cleaner Gravel Siphon for Aquariums Up to 55 Gal | Makes Water Changes Easier, Removes Debris From Gravel, Remove 30% Of Water Every 30 Days
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
Unlock to view all Top 50 ASIN competitors and their sales contributions
Best Fish Tank Accessories Brands on Amazon US — Top 3 Brand Sales Concentration (July 2026)
Tetra is the best-performing fish tank accessories brand in July 2026, moving 23,000 units across 3 ASINs for 30.3% of Top 10 volume. API follows with 16,000 units (21.1%), ahead of AAwipes on 9,000 units (11.8%).
With 7 brands splitting the Top 10 and 63.2% 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 $8.91 to $9.96, which frames the price band a competing listing has to justify.
Brand share of Top 10 volume
Tetra
3 ASINs in Top 10
30.3%
Units
23K
Revenue
$210.9K
Avg. price
$8.91
B000R9WRIC
$9.97·★4.7·26.3K revsTetra Goldfish Flakes Fish Food, 7.06 oz | Nutritionally Balanced Daily Diet for Goldfish and Small Koi, Color-Enhancing, Highly Digestible, Clean & Clear Water Formula
Units sold9KB091D3DTWS
$10.29·★4.5·5.2K revsTetra Water Cleaner Gravel Siphon for Aquariums Up to 55 Gal | Makes Water Changes Easier, Removes Debris From Gravel, Remove 30% Of Water Every 30 Days
Units sold8KB0006JM09E
$6.47·★4.7·28.2K revsTetra Whisper Bio-Bag Medium Filter Cartridges for Aquariums, 3 Count | Ready to Use, Fits Tetra Whisper Fish Tank Filters 5-10 Gal, PF-10, IQ 10, Replace Monthly
Units sold6K
API
2 ASINs in Top 10
21.1%
Units
16K
Revenue
$150.7K
Avg. price
$9.73
B004LO9KSY
$8.48·★4.7·26.8K revsAPI TAP WATER CONDITIONER Aquarium Water Conditioner 16-Ounce Bottle
Units sold10KB000255MZG
$10.98·★4.8·38.6K revsAPI Stress Coat Aquarium Water Conditioner 16-Ounce Bottle
Units sold6K
AAwipes
1 ASIN in Top 10
11.8%
Units
9K
Revenue
$86.1K
Avg. price
$9.96
B0D2RG3LXR
$9.96·★4.3·3.3K revsAAwipes 8-in-1 Aquarium Test Kit for Fish Tanks - Quick & Accurate Water Testing Strips for Aquariums & Ponds. Tests pH, Ammonia, Alkalinity, Hardness, Chlorine, etc. (K02-50)
Units sold9K
Trending Fish Tank Accessories 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, 2 ASINs forced its way in: B0006JM09E booked 6K units at $6.47, with ▲ 0.0% MoM change. On the growth side, B0GGTJCVR5 leads positive momentum with ▲ 900.0% MoM growth on 4K 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.
B0006JM09E
Tetra Whisper Bio-Bag Medium Filter Cartridges for Aquariums, 3 Count | Ready to Use, Fits Tetra Whisper Fish Tank Filters 5-10 Gal, PF-10, IQ 10, Replace Monthly
Price
$6.47
Rating
4.7
Reviews
28.2K
Latest month sales
B0FJG14PJR
FIVEIZERO 100PCS Luminous mini Resin Animals - 20 Styles Multiple Colors per Style Glow in The Dark Plastic Tiny Animals Figures for Dollhouse, Fairy Garden, Aquarium, Party Favors & DIY Craft Decor
Price
$8.99
Rating
4.7
Reviews
574
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
Unlock to view ASIN details and product titles
Price
$39.99
Rating
3.9
Reviews
166
Latest month sales
One Amazon dataset. Two ways to use it.
Every number in this fish tank accessories report comes from the Amazon market data ASINSIGHT tracks. Pick how you want to work with it.
Explore the full data
Browse the complete, structured picture in a ready-made interface — and keep tracking it as the market moves.
- Organic vs. ad traffic shifts per product
- Hourly rank and search-volume tracking
- Competitor ASINs and historical trends
Starts with a free ASINSIGHT account
Analyze the data your way
Connect the same data to ChatGPT, Claude or Cursor, then combine any dimensions to answer your own questions.
- Combine product, keyword, sales & ranking data freely
- Follow up in your own words, no fixed reports
- Works in ChatGPT, Claude & Cursor
20,000 credits/mo free, no credit card