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100 Gallon Fish Tank

100 Gallon Fish Tank shows a thin review moat (91 avg reviews), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Flapen Score

58
Worth a look

Top 19% of 3,978 Pet Supplies niches · +7 vs the category median of 51

Market size 49Growth 20Conversion 7Competition 91Returns 93Price range 5Avg price 53Brand share 89Review moat 95Quality gap 75
This niche Category average · 3,978 niches

Is 100 Gallon Fish Tank profitable on Amazon?

According to Flapen's Amazon United States niche tracking, 100 Gallon Fish Tank is a $270K/yr Amazon United States market (311K searches/yr). The top 5 brands hold 46% of demand. Verdict: Worth a look — 58/100.

100 Gallon Fish Tank: the Amazon niche in one read

Everything a seller checks before entering, in three answers.

Is the demand real?

Worth a look. Search demand moved -9.9% over the last 90 days and 0.5% of searches end in a purchase.

$270K

revenue / yr

Units sold / yr2K
Search volume / yr-9.9%311K
Conversion rate0.5%
Avg price$167.35

Who owns the niche?

The top 5 brands hold 46% of demand, so 54% of the market is open.

54%

open market share

Brands · sellers45 · 50
Top-5 product click share24%
Open market54%
Avg brand age25 months

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 · 83 products

Sponsored placement96%
New entrants (1y)51· 21 succeeded
Avg rating4.3★
Avg reviews91

Top 100 Gallon Fish Tank products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

Competition: brands, sellers & click share

Clicks spread well past the top 5 (24% combined) — an open shelf where new products get seen.

$0$5K$11K$16K$22K1101001K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

45 rising

Sellers

50

Top-5 brand share

46%

Top 20: 85%

Top-5 click share

24%

Top 20: 57%

Open market

49%

  • VOWNER15%
  • 4ever2buy9%
  • Hlivelood8%
  • Urban Deco7%
  • DALEMHOME6%
  • FUXJUM5%

100 Gallon Fish Tank demand & seasonality

Weekly search volume, with the niche's key stats alongside.

Volume311KCVR0.5%Products83Brands45Top 5 Brands46%OOS Rate37.5%Rating4.3★Reviews91Avg BSR#132
8K6KHoliday '24Prime Day '25Black Friday '25Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.3×

Top 100 Gallon Fish Tank search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

  • 75 gallon aquarium stand152K/yr
  • 75 gallon fish tank stand45K/yr
  • 75 gallon tank stand19K/yr
  • 125 gallon aquarium stand19K/yr
  • fish tank stand 75 gallon10K/yr
  • 90 gallon aquarium stand12K/yr
  • aquarium stand 75 gallon19K/yr
  • 60 gallon tank stand8K/yr
  • 125 gallon fish tank stand8K/yr
  • 75 gallon stand4K/yr

What reviews say buyers love and hate about 100 Gallon Fish Tank

What buyers mention most, as a share of all reviews.

What buyers love

80% of reviews
Strength34%

Pretty sturdy

Quality-Overall11%

Beautiful quality

Value For Money7%

Great value

Size-Overall6%

Fits perfect

Assembly/Installation6%

easy setup

What buyers complain about

61% of reviews
Assembly/Installation16%

a little hard to assemble

Strength11%

Very flimsy

Quality-Overall8%

was of a cheaper quality than I initially expected

Instructions/User Manual/Troubleshooting8%

Horrible instructions

Size-Overall5%

Not fit

100 Gallon Fish Tank return rate & reasons

Why buyers send it back, as a share of all return requests.

1.1%

Return rate

49%

Fixable by listing

The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.

1Size-Overall
31%
2Defective Material/Parts
23%
3Advertised Vs Actual Product
10%
4Assembly/Installation
6%
5Value For Money
6%

Common 100 Gallon Fish Tank questions

The questions sellers ask about this niche, answered from the tracked metrics.

Flapen scores 100 Gallon Fish Tank 58/100 on Amazon United States — Worth a look. The niche generates $270K/yr across 83 tracked products. 21 of 51 products launched in the last 360 days are still selling. Search demand moved -9.9% over the last 90 days.
Search demand for 100 Gallon Fish Tank on Amazon United States is steady year-round — the busiest month runs 1.3× the quietest.