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.

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.

Returns

Incredible0.0%

return rate — above 6% kills the launch gate

Quality gap

Great4.1★

avg incumbent rating — lower means beatable quality

Review moat

Great357.46

avg incumbent reviews — the moat a new listing must climb

Avg price

Great$16.90

avg listing price — sweet spot $15–$100

Conversion

Good5.4%

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

Good68%

top-5 brand share — brands hold most of the demand

Competition

Good52%

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

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

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.

No pronounced peak months · busiest ÷ quietest = 1.6×

Open Trend

Top daphnia search terms

daphnia46K/yr +12.5%5.1% conv.
live daphnia30K/yr -8.8%3.6% conv.
daphnia live21K/yr -8.8%4.9% conv.
live daphnia freshwater3K/yr +105.3%3.8% conv.
daphnia culture4K/yr -3.8%2.6% conv.
daphnia live culture3K/yr +7.9%3.3% conv.

All 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.

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

100+ Freshwater Water Daphnia-Great feeders for Freshwater Life and Axolots Please See Our Seller Page for Our Shipping info and Refund Policy

Generic$17.934.1★305 rev

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

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$16.754.3★47 rev

JADINGSFARM Daphnia Instand Fish Food 50ml Ready to Use Aquarium Fish Food Non-Living Food for Betta Saltwater Marine Freshwater Fish (Daphnia)

JADINGSFARM$9.644.4★46 rev

Aquatic Provisions Freeze Dried Daphnia 0.5 oz Fish Food for Freshwater and Marine Aquarium Fish Invertebrates and Fry

Aquatic Provisions$12.864.4★186 rev

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$15.998 rev

4mo ago

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$17.957 rev

4mo ago

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$8.992 rev

5mo ago

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$16.7547 rev

9mo ago

Starter Booster Pack 100+ Water Daphnia and 2 Triple Filtered Rainwater Starter

Generic$27.622 rev

11mo ago

What buyers say about daphnia

What buyers praise and complain about, mined from review topics.

What buyers love

Quality-Overall23%

“Generous portion”

Advertised Vs Actual Product17%

“just as promised”

Value For Money8%

“Great Product at affordable prices”

Ease Of Use6%

“Its easy to use”

Durability6%

“PERFECT Alive and well”

Instructions/User Manual/Troubleshooting5%

“Well packed & easy instructions”

Size-Overall5%

“Very lively critters great size, great quality”

Taste-Overall4%

“my fish love this food”

Strength3%

“Good and sturdy”

Freshness3%

“Arrived healthy looking”

What buyers complain about

Size-Overall13%

“Most of them are large as well”

Value For Money11%

“It's somewhat expensive”

Contamination10%

“Has parasites”

Instructions/User Manual/Troubleshooting8%

“After lots of preparation very disappointed to have not been successful”

Quality-Overall7%

“Terrible quality food”

Functionality-Overall7%

“I tried to be successful maintaining a culture but failed”

Color5%

“baby brine were dark brown”

Heating4%

“neither of them are heated”

Durability4%

“But all ended up spitting them out”

Advertised Vs Actual Product3%

“I wish that information was in the description because I would have ordered more because I like the company”

Top return reasons

Functionality-Overall29%

Durability14%

Heating14%

Advertised Vs Actual Product14%

Size-Overall14%

Compatibility-Overall14%

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.