Lego Aquarium
FailDemand is soft, at -39.8% this quarter, so Lego Aquarium is a Fail.
- Flapen Score
- 46 / 100Top 38% of 2,084 Spielzeug niches · +3 vs the category median of 4346
- Market size
- €54K/yr122K searches / yr
- 90-day growth
- -39.8%search demand this quarter
- Competition
- 52%top-5 click share · 13 brands · 200 sellers
Flapen Score
Lego Aquarium against its category
The dotted line is the Spielzeug average. Past it, Lego Aquarium is stronger. Inside it, weaker.
Market
The Lego Aquarium market on Amazon at a glance
Shoppers on Amazon Germany searched for Lego Aquarium 122K times last year and spent an estimated €54K. The top 5 brands take 84% of clicks. Demand peaks in Oct–Nov–Dec. Flapen scores it 46 out of 100, a Fail.
01 · Demand
An estimated 1.2% of those searches ended in a purchase.
Shoppers searched for this 122K times in the last 12 months. That counts every search on Amazon Germany for this niche's terms. An estimated 1.2% of those searches ended in a purchase. Searches in the last 90 days moved -39.8% against the 90 days before. Searches, conversion and average price together put the market at an estimated €54K a year.
- Searches, last 12 months
- 122K
- Growth, 90 days vs prior 90
- -39.8%
- Conversion, latest week
- 1.2%
- Market size, estimated
- €54Ka year
- Peak month
- November7.4× the quietest month
- Top search term
- lego aquarium76K searches a year
02 · Price
A sale here is worth €37.27.
Listings sell for €37.27 on average, from €6.40 to €99.44. Amazon reports units sold in ranges. This niche sold 1K to 1K a year. The average listing sells 0 to 100 of them. At €37.27 that is €0 to €4K a year per listing.
- Average price
- €37.27inside the $15 to $100 sweet spot
- Price range
- €6.40–€99.44
- Amazon Germany median price
- €18.99across 29,809 niches
- Units sold a year
- 1K–1K
- Units per listing a year
- 0–100
- Revenue per listing a year
- €0–€4K
- Returns
- 0.6%of orders · Amazon Germany median 1.1%
03 · Entry bar
The bar here is low.
83% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 22.5% of listings are out of stock. The average listing ranks #1,538 within Bau- & Konstruktionsspielzeug. It carries 107 reviews at 4.36 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 83%
- Prime listings
- 100%
- Out of stock, average day
- 22.5%
- Average rank
- #1,538in Bau- & Konstruktionsspielzeug
- Average rating
- 4.36 starsAmazon Germany average 4.37 stars
- Average reviews
- 107per listing
- Listings tracked
- 23
04 · Newcomers
5 of last year's 10 launches cleared the first-year sales bar.
10 products launched here in the last 12 months. 5 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 23 months on average, so a newcomer is not facing entrenched names.
- Launched, last 12 months
- 10
- Successful launches
- 5Amazon's first-year sales bar
- Average brand age
- 23 months
Products
Top Lego Aquarium 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 16, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
8-in-1 Aquarium Fish Tank Baustein mit LED Licht einschließlich Meeresquallen Fischen Tierbauspielzeug Geburtstag Weihnachten Geschenk für Erwachsene Kinder Jungen Mädchen ab 6 8 10 12+ Jahren
- Price
- €23.34
- Rating
- 4.4/5
- Reviews
- 266
- Age
- 1y ago

LEGO 31122 Creator 3 in 1 Aquarium Staffelei & Schatztruhe | 3 Modelle in 1 Set
- Price
- €99.44
- Rating
- 4.7/5
- Reviews
- 310
- Age
- 4y ago

Blumen Insekten Tank Bauset kompatibel mit Lego für Adutls Creator Baukasten für Jungen und Mädchen ab 12 Jahren 1284 PCS
- Price
- €38.52
- Rating
- 4.0/5
- Reviews
- 81
- Age
- 2y ago

LEGO Limited Edition 40783 Korallenriff Fische Ozean Diorama Sammelset
- Price
- €32.73
- Rating
- 3.8/5
- Reviews
- 4
- Age
- 1y ago

QLT QIAOLETONG Aquarium Turtle Fish Tank Ideas Bauspielzeug mit LED LichtAquarium klemmbausteine deko bausteine Geschenk für Erwachsene und ab 16+Jahren(625PCS)
- Price
- €23.19
- Rating
- 4.2/5
- Reviews
- 86
- Age
- 2y ago
Trending
estimated 90-day click momentum
JONRRYIN Aquarium-Baustein 12-in-1 Aquarium Fish Tank Bauspielzeug Meerestiere Tierbauspielzeug mit einschließlich Meeresquallen Fischen Geschenk für Erwachsene und Jungen Mädchen ab 8-12 Jahren
- Price
- €25.22
- Rating
- 4.5/5
- Reviews
- 8
- Age
- 4mo ago

LEGO Ideas Schwimmende Otter - Modellbau für Erwachsene - 3D Puzzle mit Seeotter Figuren (Mutter & Jungtier) - DIY Deko für Regal oder Wohnraum - Geschenkidee für Kunst- & Bastelfans - 21366
- Price
- €70.46
- Rating
- 4.8/5
- Reviews
- 90
- Age
- 5mo ago

Orchideen Gottesanbeterin Klemmbausteine Set Kompatibel mit Lego Flowers Animal 1077 Teile Insekten Blumen Bonsai Botanik Deko Geschenk für Erwachsene & Kinder ab 8-16+ Jahre
- Price
- €24.10
- Rating
- 4.0/5
- Reviews
- 23
- Age
- 4mo ago

LEGO Creator 3-in-1-Set Wilder Hai mit Schatztruhe - Kreatives Spielzeug & Konstruktionsspielzeug - Meerestiere Bauset mit Hai Figur - Geschenk für Kinder ab 8 Jahren mit 3 Bauoptionen - 31381
- Price
- €20.11
- Rating
- 4.6/5
- Reviews
- 259
- Age
- 6mo ago

LEGO Creator 3-in-1-Set Meerestiere: Wunderschöne Delfine - Tierfiguren - Set mit 3 Optionen: Delfine Seepferdchen & Krabbe - Spielzeug für Kinder ab 9 Jahren - Geschenk für Mädchen & Jungen - 31385
- Price
- €30.09
- Rating
- 4.8/5
- Reviews
- 254
- Age
- 6mo ago
Newest
by launch date
Orchideen Gottesanbeterin Klemmbausteine Set Kompatibel mit Lego Flowers Animal 1077 Teile Insekten Blumen Bonsai Botanik Deko Geschenk für Erwachsene & Kinder ab 8-16+ Jahre
- Price
- €24.10
- Rating
- 4.0/5
- Reviews
- 23
- Age
- 4mo ago

JONRRYIN Aquarium-Baustein 12-in-1 Aquarium Fish Tank Bauspielzeug Meerestiere Tierbauspielzeug mit einschließlich Meeresquallen Fischen Geschenk für Erwachsene und Jungen Mädchen ab 8-12 Jahren
- Price
- €25.22
- Rating
- 4.5/5
- Reviews
- 8
- Age
- 4mo ago

LEGO Ideas Schwimmende Otter - Modellbau für Erwachsene - 3D Puzzle mit Seeotter Figuren (Mutter & Jungtier) - DIY Deko für Regal oder Wohnraum - Geschenkidee für Kunst- & Bastelfans - 21366
- Price
- €70.46
- Rating
- 4.8/5
- Reviews
- 90
- Age
- 5mo ago

LEGO Creator 3-in-1-Set Meerestiere: Wunderschöne Delfine - Tierfiguren - Set mit 3 Optionen: Delfine Seepferdchen & Krabbe - Spielzeug für Kinder ab 9 Jahren - Geschenk für Mädchen & Jungen - 31385
- Price
- €30.09
- Rating
- 4.8/5
- Reviews
- 254
- Age
- 6mo ago

LEGO Creator 3-in-1-Set Wilder Hai mit Schatztruhe - Kreatives Spielzeug & Konstruktionsspielzeug - Meerestiere Bauset mit Hai Figur - Geschenk für Kinder ab 8 Jahren mit 3 Bauoptionen - 31381
- Price
- €20.11
- Rating
- 4.6/5
- Reviews
- 259
- Age
- 6mo ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 52% of clicks. Leaders hold, but buyers still shop past them.
Brands
13 rising
Sellers
200
Est. top-5 brand share
84%
Top 20: 100%
Est. top-5 click share
52%
Top 20: 96%
Open market
13%
- LEGO33%
- QLT QIAOLETONG21%
- kiothdre16%
- ENJBRICK9%
- JONRRYIN4%
- BRIKSMAX4%
- Open — no brand owns it (7 brands, 13%)
Demand
Lego Aquarium search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Oct, Nov, Dec · busiest ÷ quietest = 7.4×
Search terms
Top Lego Aquarium search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- lego aquarium76K/yr
- lego fisch15K/yr
- lego fische6K/yr
- aquarium lego8K/yr
- lego terrarium6K/yr
- lego aquarium mit beleuchtung10K/yr
Reviews and returns
What reviews say buyers love and hate about Lego Aquarium
We read the reviews and the return reasons for every product selling here.
“Horrorzusammenbau”
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.
19 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 Lego Aquarium 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








