daphnia eggs
Skip itBrand-locked demand (top 5 brands take 97% of clicks) — this niche doesn't clear our bar today.
Quality gap
Incredible3.6★avg incumbent rating — lower means beatable quality
Returns
Incredible0.2%return rate — above 6% kills the launch gate
Review moat
Great173.3avg incumbent reviews — the moat a new listing must climb
Avg price
Great$15.99avg listing price — sweet spot $15–$100
Price range
Good$10.00–$28.29cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Good5.4%search→purchase rate — share of searches ending in a sale
Competition
Okay67%top-5 click share — leaders hold, buyers still browse
Growth
Okay+2.2%90-day search growth — must beat 0% to launch
Market size
Bad$46K$46K/yr · 53K searches
Brand share
Bad97%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, daphnia eggs is a $46K/yr Amazon United States market (53K searches/yr). The top 5 brands hold 97% of demand. Verdict: Skip it — 49/100.
Data updated Jul 17, 2026 · scored weekly · How we score niches
daphnia eggs market data
- Units sold / yr
- 2K–3K
- avg 0–100/product
- Revenue / yr
- $32K–$40K
- units × avg price
- Launch success
- —
- 0 of 1 new (360d)
- Conversion rate
- 5.4%
- Avg BSR
- #735
- Page quality
- 0%
- Prime
- 70%
- Sponsored
- 15%
- Out of stock
- 6.5%
- Avg brand age
- 61 months
- Avg seller age
- 154 days
Competition & brand share
The top 5 products take 67% of clicks — established leaders, but buyers still shop beyond them.Brands
7 flat
Sellers
8
Top-5 brand share
97%
Top 20: 100%
Top-5 click share
67%
Top 20: 100%
Open market
1%
- GREEN WATER FARM56%
- KalaRune19%
- MAHYIM12%
- Aquatic Foods Inc.6%
- Carolina3%
- Generic1%
- Open — no brand owns it (1 brand, 1%)
Demand & seasonality
Weekly Amazon search volume, last 70 weeks — +2.2% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.5×
Top daphnia eggs search terms
- daphnia eggs30K/yr
- fish eggs for hatching9K/yr
- moina eggs7K/yr
- moina5K/yr
- green water farm3K/yr
Top daphnia eggs 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.
All 20 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
GREEN WATER FARM Daphnia Magna Eggs Live Fish Food for Hatching and Culture Suitable for Feed Betta Fish
GREEN WATER FARM$17.042.9★292 rev
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$13.693.7★15 rev
GreenWaterFarm Moina Macrocopa Eggs (Water Flea) Live Fish Food for Hatching and Culture Suitable for Feed Betta Fish
GREEN WATER FARM$15.053.6★799 rev
MAHYIM Two Capsule Moina MACROCOPA Water FLEA Eggs Alive Fresh for Killifish/Fish
MAHYIM$10.103.3★72 rev
![GREEN WATER FARM Killifish Eggs Nothobranchius [Rachovii] - Tropical Freshwater Fish Eggs for Hatching Packed with Food Dropper and Indian Almond Leaves Suitable for Education and as a Hobby](https://m.media-amazon.com/images/I/51brgCv+V3L.jpg)
GREEN WATER FARM Killifish Eggs Nothobranchius [Rachovii] - Tropical Freshwater Fish Eggs for Hatching Packed with Food Dropper and Indian Almond Leaves Suitable for Education and as a Hobby
GREEN WATER FARM$24.853.0★90 rev
Newest
by launch date
KalaRune Freshwater Fairy Shirmp Eggs - for Hatching High Protein Live Fish Food for Newborn Fry Betta Fish and Other Aquatic Species. 4 Capsules.
KalaRune$10.1611 rev
GreenWaterFarm Clam Shrimp Cyzicus Pilosus Eggs for Hatching and Culture Suitable to be Pet and Science Project (Pure 2 000 Eggs)
GREEN WATER FARM$16.1341 rev
Aquatic Foods Inc. 4-Type Mixed Blend of Cyclops Daphnia Rotifers Ready to Eat Brine Shrimp Eggs for Tropical Fish Fry Babies Guppies Tetras Bettas Nano Fish1.2oz Squeeze Bottle
Aquatic Foods Inc.$11.102 rev
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$13.6915 rev
Daphnia Magna Egg
Generic$28.290 rev
Trending
90-day click momentumKalaRune Freshwater Fairy Shirmp Eggs - for Hatching High Protein Live Fish Food for Newborn Fry Betta Fish and Other Aquatic Species. 4 Capsules.
KalaRune$10.162.8★
MAHYIM Two Capsule Fairy Shrimp Eggs Alive Fresh for Killifish/Fish
MAHYIM$10.003.3★
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$13.693.7★
Daphnia Magna Egg
Generic$28.290.0★
Premium Daphnia Eggs (2000+ Eggs) for Hatching Live Fish Food | High Hatch Rate Water Flea Eggs | Nutritious Live Feed for Betta Guppy Goldfish Shrimp & Aquarium Fry | Easy to Hatch Starter Culture
MAHYIM$26.123.4★
What buyers say about daphnia eggs
What buyers praise and complain about, mined from review topics.What buyers love
“Worth it”
“The instructions are easy to follow”
“Great Product”
“easy to use”
“All seem to be what is advertised”
“very durable”
“Good gag joke”
“Purchase them, and give them a happy environment”
“easy to set up if you have basic aquarium equipment”
“just very soft aeration bubbles”
What buyers complain about
“this time no success”
“Not a single hatch even following instructions to the point”
“Very poor quality”
“After 4 days not a single monia”
“The capsules are large”
“You get a tiny amount for you $”
“Deionized or distilled is probably a poor choice”
“neither of them are heated”
“Total waste of money”
“It smells like vegetable powder”
Top return reasons
Common questions
- Is daphnia eggs profitable to sell on Amazon United States?
- The niche generates $46K/yr across 20 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +2.2%. Flapen's verdict: Skip it (49/100).
- How competitive is the daphnia eggs niche?
- 7 brands and 8 sellers compete. The top 5 products take 67% of clicks and top 5 brands hold 97% of demand.
- What do buyers complain about in daphnia eggs?
- Top complaints mined from reviews: Functionality-Overall, Instructions/User Manual/Troubleshooting, Quality-Overall. The return rate is 0.2%.
- When does demand for daphnia eggs peak?
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- What does it cost to enter the daphnia eggs niche?
- Listings span $10.00–$28.29; the average listing price is $15.99 (sweet spot $15–$100). The average incumbent carries 173 reviews — the moat a new listing must climb.