---
title: "Aquarium Thermometer — €109K/yr Amazon DE Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/de/haustier/aquarium-thermometer"
last_updated: "2026-08-09T21:30:13.577Z"
locale: en
meta:
description: "Niche score 53/100 · €109K/yr market · 234K searches/yr · €6.20 avg price. Soft demand (-32.0% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 53/100 · €109K/yr market · 234K searches/yr · €6.20 avg price. Soft demand (-32.0% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Aquarium Thermometer — €109K/yr Amazon DE Niche (2026) - Flapen"
---
# **aquarium thermometer**
**Worth a look**
Shows low returns (0.9%), but soft demand (-32.0% this quarter) keeps it on the watch list.
Market size 26Growth 9Conversion 77Competition 58Returns 95Price range 16Avg price 17Brand share 82Review moat 64Quality gap 83
**Returns**
**Incredible****0.9%**
return rate — above 5% kills the launch gate
**Quality gap**
**Great****4.2★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Great****53%**
top-5 brand share — no brand owns this niche
**Conversion**
**Great****7.5%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Good****942.72**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Good****50%**
top-5 click share — leaders hold, buyers still browse
**Market size**
**Okay****€109K**
€109K/yr · 234K searches
**Avg price**
**Bad****€6.20**
avg listing price — sweet spot $15–$100
**Price range**
**Bad****€2.17–€17.40**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Bad****-32.0%**
90-day search growth — must beat 0% to launch
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=de&signal=no_dominant_brand "Top brand's click share < 20%")
According to Flapen's Amazon Germany niche tracking, aquarium thermometer is a €109K/yr Amazon Germany market (234K searches/yr). The top 5 brands hold 53% of demand. Demand peaks in Jan–Feb. Verdict: Worth a look — 53/100.
Data updated Jul 13, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **aquarium thermometer market data**
- **Units sold / yr**
- **15K–20K**
- avg 500–750/product
- **Revenue / yr**
- **€93K–€124K**
- units × avg price
- **Conversion rate**
- **7.5%**
- **Avg BSR**
- **#15**
- **Page quality**
- **0%**
- **Prime**
- **96%**
- **Sponsored**
- **80%**
- **Out of stock**
- **9.9%**
- **Avg brand age**
- **41 months**
- **Avg seller age**
- **193 days**
## **Competition & brand share**
The top 5 products take 50% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**19 **▼falling
**Sellers**
**38**
**Top-5 brand share**
**53%**
Top 20: 100%
**Top-5 click share**
**50%**
Top 20: 94%
**Open market**
**41%**
- RUIZHI20% - Measury9% - JBL9% - Juwel Aquarium9% - OQIMAX7% - Generisch6%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -32.0% search growth over the last 90 days.
6K4KSpike '24Spike '25Prime Day '25Black Friday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jan, Feb · busiest ÷ quietest = 1.9×
[**Open Trend **](https://flapen.com/research/de/haustier/aquarium-thermometer/trend)
## **Top aquarium thermometer search terms**
- **aquarium thermometer**133K/yr-34.4%6.5% conv. - **thermometer aquarium**45K/yr-24.5%7.0% conv. - **aquarium thermometer digital**22K/yr-26.2%5.7% conv. - **thermometer aquarium digital**5K/yr+41.1%6.6% conv. - **aquarium thermometer innen**8K/yr-41.0%7.1% conv. - **aquarium temperaturanzeige**4K/yr-17.9%6.7% conv. - **aquarienthermometer**5K/yr-30.7%4.6% conv. - **aquariumthermometer**4K/yr-41.1%8.0% conv. - **thermometer aquarium innen**8K/yr-74.1%9.7% conv. [**All search terms **](https://flapen.com/research/de/haustier/aquarium-thermometer/search-terms)
## **Top aquarium thermometer products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%5%€5K10%€11K15%€16K20%€22K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Aquarium Thermometer Mini Aquarium Thermometer Digital LED-Anzeige Hochpräzisions-Temperatursensor Geeignet für Süßwasser-Meeresaquarien**RUIZHI**€5.67**4.5★1,220 rev](https://www.amazon.de/dp/B0CF9S6FPG) [2**JUWEL Aquarium - Digital Thermometer 4.0 - passend für alle Aquarien**Juwel Aquarium**€17.40**4.4★198 rev](https://www.amazon.de/dp/B0FL2NHZ6G) [3**Measury Aquarium Thermometer Wasserdicht Digitales Aquarien Thermometer für Süßwasser und Meerwasser TM10**Measury**€7.06**3.7★5,627 rev](https://www.amazon.de/dp/B07SH8PV7M) [4**JBL Aquarien-Thermometer Premium 6140700 Schlankes Glas-Präzisionsthermometer Inkl. Saughalter**JBL**€4.67**4.4★2,025 rev](https://www.amazon.de/dp/B000H6SRWK) [5**OQIMAX Aquarium Thermometer Mini Digital Aquarienthermometer LED Display with Touch Screen High Precision Temperature Sensor Glue-On Mini Marine Temperature Sensor for Freshwater Marine Aquariums**OQIMAX**€6.51**4.6★180 rev](https://www.amazon.de/dp/B0D8KPKRHT)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Aquarium Thermometer Analog Glas mit Saugnapf Präzises Wasserthermometer für Aquarium Wassertemperatur Messgerät Innen für Süß- und Meerwasser Leicht Ablesbar Hohe Genauigkeit Ohne Batterie**Generisch**€6.52**35 rev8mo ago](https://www.amazon.de/dp/B0G2KMBQVD) [**2 Stück Aquarium Thermometer Glasthermometer Aquarium Aquariums Thermometer Innen Präziser Wassertemperaturmesser Für Fischbecken Leicht Ablesbare Skala Korrosionsbeständig**Miyanvuo**€2.85**24 rev10mo ago](https://www.amazon.de/dp/B0FQBVBQLF) [**JUWEL Aquarium - Digital Thermometer 4.0 - passend für alle Aquarien**Juwel Aquarium**€17.40**198 rev11mo ago](https://www.amazon.de/dp/B0FL2NHZ6G) [**Aquarium Thermometer Kabellos Mini Wasserthermometer Digital digitales LCD-Wassertemperatur-Thermometer für Aquarium Aquarium Meeresreptilien Terrarium (weiß)**Houdian**€4.79**93 rev1y ago](https://www.amazon.de/dp/B0F5W6ZSNN) [**Aquarium-Thermometer Mini Thermometer Aquarium Digital mit Hochpräzisionssensor und Led für Fischbehälter Süßwasser- und Meerwasser-Aquarien**Wowfast**€5.22**94 rev1y ago](https://www.amazon.de/dp/B0F4HY4K54)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Flintronic Aquariumthermometer Mini Aquariumthermometer Digital LED Kabelloses Temperaturmessgerät mit Temperatur Messgerät Aufkleber Marine Thermometer für Süßwasser Meerwasser Reptilien**flintronic**€4.30**3.7★**▲ 105%**](https://www.amazon.de/dp/B0DP56KY5Z) [**JBL Aquarien-Thermometer Premium 6140700 Schlankes Glas-Präzisionsthermometer Inkl. Saughalter**JBL**€4.67**4.4★**▲ 73%**](https://www.amazon.de/dp/B000H6SRWK) [**Aquarium Thermometer Analog Glas mit Saugnapf Präzises Wasserthermometer für Aquarium Wassertemperatur Messgerät Innen für Süß- und Meerwasser Leicht Ablesbar Hohe Genauigkeit Ohne Batterie**Generisch**€6.52**4.2★**▲ 64%**](https://www.amazon.de/dp/B0G2KMBQVD) [**ORIA Aquarium Thermometer LED Anzeige Digital Temperaturmessgerät Aquarium () Kleben-On Mini Marine Temperatursensor für Süßwasser Meerwasser Reptilien**ORIA**€6.88**4.4★**▲ 56%**](https://www.amazon.de/dp/B0CM3JH6KX) [**Aquarium Thermometer Kabellos Mini Wasserthermometer Digital digitales LCD-Wassertemperatur-Thermometer für Aquarium Aquarium Meeresreptilien Terrarium (weiß)**Houdian**€4.79**4.3★**▲ 36%**](https://www.amazon.de/dp/B0F5W6ZSNN)
**~~View all trending →~~**
## **What buyers say about aquarium thermometer**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Benutzerfreundlichkeit**18%
*“Einfache Handhabung”*
**Qualität insgesamt**14%
*“Top Produkt”*
**beworben Vs Tatsächliches Produkt**11%
*“Hält was es verspricht”*
**Gesamtgröße**11%
*“Passt”*
**Preis-Leistungs-Verhältnis**11%
*“bestes Preis -Leistungsverhältnis”*
**Effizienz**9%
*“Das Gerät funktioniert einwandfrei”*
**Design insgesamt**7%
*“schlicht im Design”*
**Akkulaufzeit**4%
*“Muss zum ablesen eingeschaltet werden dadurch lange Batterie Laufzeit”*
**Haltbarkeit**3%
*“funktioniert immer zuverlässig”*
**Gesamt anzeigen**2%
*“Optisch auch ganz gut anzuschauen”*
### **What buyers complain about **
**Qualität insgesamt**12%
*“Müll”*
**Benutzerfreundlichkeit**9%
*“Schwer lesbar”*
**Funktionalität insgesamt**8%
*“Funktioniert nicht”*
**Haltbarkeit**7%
*“Die halten aber auch nicht lange, lösen sich ständig”*
**Gesamtgröße**7%
*“klein”*
**Akkulaufzeit**6%
*“Batterie gehen schnell leer”*
**Haftung/Klebrigkeit**5%
*“Es hält nicht an der Scheibe es fällt dauerhaft immer ab Kleber ist nicht stark Genug”*
**Produktzustand**5%
*“Keine neue Ware”*
**Preis-Leistungs-Verhältnis**5%
*“Sehr schade für das Geld”*
**Stärke**3%
*“Hält nicht”*
### **Top return reasons **
**Funktionalität insgesamt**17%
**Heizung**15%
**Gesamt anzeigen**13%
**Gesamtgröße**12%
**Defekt Material/Teile**7%
**Haftung/Klebrigkeit**5%
**Haltbarkeit**4%
**Kompatibilität – insgesamt**3%
**Kratzfestigkeit**3%
**beworben Vs Tatsächliches Produkt**3%
## **Common questions**
- **Is aquarium thermometer profitable to sell on Amazon Germany?**
- The niche generates €109K/yr across 25 tracked products. 1 of 4 products launched in the last 360 days are still selling. 90-day search growth is -32.0%. Flapen's verdict: Worth a look (53/100).
- **How competitive is the aquarium thermometer niche?**
- 19 brands and 38 sellers compete. The top 5 products take 50% of clicks and top 5 brands hold 53% of demand.
- **What do buyers complain about in aquarium thermometer?**
- Top complaints mined from reviews: Qualität insgesamt, Benutzerfreundlichkeit, Funktionalität insgesamt. The return rate is 0.9%.
- **When does demand for aquarium thermometer peak?**
- Demand peaks in Jan–Feb; the busiest month runs 1.9× the quietest.
- **What does it cost to enter the aquarium thermometer niche?**
- Listings span €2.17–€17.40; the average listing price is €6.20 (sweet spot $15–$100). The average incumbent carries 943 reviews — the moat a new listing must climb.
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