---
title: "Daphnia — $97K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/pet-supplies/daphnia"
last_updated: "2026-07-21T19:34:49.645Z"
locale: en
meta:
description: "Niche score 59/100 · $97K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 59/100 · $97K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Daphnia — $97K/yr Amazon US Niche (2026) - Flapen"
---
# **daphnia**
**Worth a look**
Shows low returns (0.0%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 24Growth 30Conversion 62Competition 55Returns 100Price range 62Avg price 80Brand share 61Review moat 82Quality gap 88
**Returns**
**Incredible****0.0%**
return rate — above 6% kills the launch gate
**Quality gap**
**Great****4.1★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Great****357.46**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Great****$16.90**
avg listing price — sweet spot $15–$100
**Conversion**
**Good****5.4%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Good****$4.98–$31.25**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Good****68%**
top-5 brand share — brands hold most of the demand
**Competition**
**Good****52%**
top-5 click share — leaders hold, buyers still browse
**Growth**
**Okay****+3.6%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$97K**
$97K/yr · 106K searches
According to Flapen's Amazon United States niche tracking, daphnia is a $97K/yr Amazon United States market (106K searches/yr). The top 5 brands hold 68% of demand. Verdict: Worth a look — 59/100.
Data updated Jul 17, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **daphnia market data**
- **Units sold / yr**
- **4K–5K**
- avg 100–250/product
- **Revenue / yr**
- **$68K–$85K**
- units × avg price
- **Launch success**
- **0%**
- 0 of 5 new (360d)
- **Conversion rate**
- **5.4%**
- **Avg BSR**
- **#426**
- **Page quality**
- **0%**
- **Prime**
- **54%**
- **Sponsored**
- **38%**
- **Out of stock**
- **14.0%**
- **Avg brand age**
- **66 months**
- **Avg seller age**
- **153 days**
## **Competition & brand share**
The top 5 products take 52% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**16 **—flat
**Sellers**
**34**
**Top-5 brand share**
**68%**
Top 20: 100%
**Top-5 click share**
**52%**
Top 20: 96%
**Open market**
**26%**
- GREEN WATER FARM19% - Generic19% - Arcis Aquarium13% - Carolina9% - JADINGSFARM8% - Aquatic Provisions6%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +3.6% search growth over the last 90 days.
3K2KSpike '25Holiday '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.6×
[**Open Trend **](https://flapen.com/research/us/pet-supplies/daphnia/trend)
## **Top daphnia search terms**
- **daphnia**46K/yr+12.5%5.1% conv. - **live daphnia**30K/yr-8.8%3.6% conv. - **daphnia live**21K/yr-8.8%4.9% conv. - **live daphnia freshwater**3K/yr+105.3%3.8% conv. - **daphnia culture**4K/yr-3.8%2.6% conv. - **daphnia live culture**3K/yr+7.9%3.3% conv. [**All search terms **](https://flapen.com/research/us/pet-supplies/daphnia/search-terms)
## **Top daphnia 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%4%$4K8%$8K12%$12K16%$16K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**100+ Freshwater Water Daphnia-Great feeders for Freshwater Life and Axolots Please See Our Seller Page for Our Shipping info and Refund Policy**Generic**$17.93**4.1★305 rev](https://www.amazon.com/dp/B0BV3754QP) [2**GREEN WATER FARM Daphnia Magna Eggs Live Fish Food for Hatching and Culture Suitable for Feed Betta Fish**GREEN WATER FARM**$17.04**2.9★292 rev](https://www.amazon.com/dp/B08WKLZZPM) [3**300+ Live Daphnia Magna with Chlorella (Starter Kit) | Premium Living Culture Feeder for Freshwater Fish Fry Shrimp & Axolotls Green Water Planktonic Crustacean Water Fleas Aquatic Live Food**Arcis Aquarium**$16.75**4.3★47 rev](https://www.amazon.com/dp/B0FWTYVW8K) [4**JADINGSFARM Daphnia Instand Fish Food 50ml Ready to Use Aquarium Fish Food Non-Living Food for Betta Saltwater Marine Freshwater Fish (Daphnia)**JADINGSFARM**$9.64**4.4★46 rev](https://www.amazon.com/dp/B0FBS84N76) [5**Aquatic Provisions Freeze Dried Daphnia 0.5 oz Fish Food for Freshwater and Marine Aquarium Fish Invertebrates and Fry**Aquatic Provisions**$12.86**4.4★186 rev](https://www.amazon.com/dp/B0CW2461ZC)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**JADINGSFARM Liquid Fish Food with Non-Living Daphnia - No Refrigeration Needed for Tropical Fish Fry Corals Seahorses & Jellyfish - Promotes Vibrant Colors & Healthy Growth (Daphnia)**JADINGSFARM**$15.99**8 rev4mo ago](https://www.amazon.com/dp/B0GM77XCYN) [**Two (2) Live Green Water (Chlorella vulgaris) Starter Culture Vials - Live Phytoplankton for Aquarium microfauna Stability Infusora Production Zooplankton (Daphnia Moina etc.) Food and More**BugBoy4Ever**$17.95**7 rev4mo ago](https://www.amazon.com/dp/B0GQPQNQ7F) [**Vorenzyme Instant Daphnia Fish Food - No Hatch High Protein Fry Food with Astaxanthin for Betta Guppy Discus Tropical Fish Corals Jellyfish & Seahorses in Saltwater & Freshwater Aquarium (50ml)**Vorenzyme**$8.99**2 rev5mo ago](https://www.amazon.com/dp/B0GW92J31X) [**300+ Live Daphnia Magna with Chlorella (Starter Kit) | Premium Living Culture Feeder for Freshwater Fish Fry Shrimp & Axolotls Green Water Planktonic Crustacean Water Fleas Aquatic Live Food**Arcis Aquarium**$16.75**47 rev9mo ago](https://www.amazon.com/dp/B0FWTYVW8K) [**Starter Booster Pack 100+ Water Daphnia and 2 Triple Filtered Rainwater Starter**Generic**$27.62**2 rev11mo ago](https://www.amazon.com/dp/B0FLB519LR)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Vorenzyme Instant Daphnia Fish Food - No Hatch High Protein Fry Food with Astaxanthin for Betta Guppy Discus Tropical Fish Corals Jellyfish & Seahorses in Saltwater & Freshwater Aquarium (50ml)**Vorenzyme**$8.99**3.0★**▲ 257%**](https://www.amazon.com/dp/B0GW92J31X) [**JADINGSFARM Liquid Fish Food with Non-Living Daphnia - No Refrigeration Needed for Tropical Fish Fry Corals Seahorses & Jellyfish - Promotes Vibrant Colors & Healthy Growth (Daphnia)**JADINGSFARM**$15.99**4.1★**▲ 254%**](https://www.amazon.com/dp/B0GM77XCYN) [**KalaRune Moina macrocopa Eggs (Water Flea) - for Hatching Freshwater Live Fish Food for Newborn Fry Betta Fish and Other Aquatic Species. Encourages Natural Hunting Behavior in Fish. 3 Capsules**KalaRune**$13.69**3.7★**▲ 214%**](https://www.amazon.com/dp/B0FPZ98YJY) [**Aquatic Arts Live Daphnia Magna 100PK Fish Food Freshwater Crustaceans Plankton for Freshwater Aquarium Food for Betta Fish Tank Live Freshwater Fish Food Fish Tank Cleaner**Aquatic Arts**$19.74**0.0★**▲ 161%**](https://www.amazon.com/dp/B0C5YDND3J) [**Two (2) Live Green Water (Chlorella vulgaris) Starter Culture Vials - Live Phytoplankton for Aquarium microfauna Stability Infusora Production Zooplankton (Daphnia Moina etc.) Food and More**BugBoy4Ever**$17.95**5.0★**▲ 109%**](https://www.amazon.com/dp/B0GQPQNQ7F)
**~~View all trending →~~**
## **What buyers say about daphnia**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**23%
*“Generous portion”*
**Advertised Vs Actual Product**17%
*“just as promised”*
**Value For Money**8%
*“Great Product at affordable prices”*
**Ease Of Use**6%
*“Its easy to use”*
**Durability**6%
*“PERFECT Alive and well”*
**Instructions/User Manual/Troubleshooting**5%
*“Well packed & easy instructions”*
**Size-Overall**5%
*“Very lively critters great size, great quality”*
**Taste-Overall**4%
*“my fish love this food”*
**Strength**3%
*“Good and sturdy”*
**Freshness**3%
*“Arrived healthy looking”*
### **What buyers complain about **
**Size-Overall**13%
*“Most of them are large as well”*
**Value For Money**11%
*“It's somewhat expensive”*
**Contamination**10%
*“Has parasites”*
**Instructions/User Manual/Troubleshooting**8%
*“After lots of preparation very disappointed to have not been successful”*
**Quality-Overall**7%
*“Terrible quality food”*
**Functionality-Overall**7%
*“I tried to be successful maintaining a culture but failed”*
**Color**5%
*“baby brine were dark brown”*
**Heating**4%
*“neither of them are heated”*
**Durability**4%
*“But all ended up spitting them out”*
**Advertised Vs Actual Product**3%
*“I wish that information was in the description because I would have ordered more because I like the company”*
### **Top return reasons **
**Functionality-Overall**29%
**Durability**14%
**Heating**14%
**Advertised Vs Actual Product**14%
**Size-Overall**14%
**Compatibility-Overall**14%
## **Common questions**
- **Is daphnia profitable to sell on Amazon United States?**
- The niche generates $97K/yr across 24 tracked products. 0 of 5 products launched in the last 360 days are still selling. 90-day search growth is +3.6%. Flapen's verdict: Worth a look (59/100).
- **How competitive is the daphnia niche?**
- 16 brands and 34 sellers compete. The top 5 products take 52% of clicks and top 5 brands hold 68% of demand.
- **What do buyers complain about in daphnia?**
- Top complaints mined from reviews: Size-Overall, Value For Money, Contamination. The return rate is 0.0%.
- **When does demand for daphnia peak?**
- Demand is steady year-round — the busiest month runs 1.6× the quietest.
- **What does it cost to enter the daphnia niche?**
- Listings span $4.98–$31.25; the average listing price is $16.90 (sweet spot $15–$100). The average incumbent carries 357 reviews — the moat a new listing must climb.
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