---
title: "Blood Worms for Fish — $284K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/pet-supplies/blood-worms-for-fish"
last_updated: "2026-07-21T21:55:28.144Z"
locale: en
meta:
description: "Niche score 56/100 · $284K/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 56/100 · $284K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Blood Worms for Fish — $284K/yr Amazon US Niche (2026) - Flapen"
---
# **blood worms for fish**
**Worth a look**
Shows low returns (0.1%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 50Growth 24Conversion 81Competition 51Returns 100Price range 73Avg price 55Brand share 56Review moat 45Quality gap 48
**Returns**
**Incredible****0.1%**
return rate — above 6% kills the launch gate
**Conversion**
**Great****8.5%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Good****$3.69–$44.90**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Good****71%**
top-5 brand share — brands hold most of the demand
**Avg price**
**Good****$12.62**
avg listing price — sweet spot $15–$100
**Competition**
**Good****55%**
top-5 click share — leaders hold, buyers still browse
**Market size**
**Good****$284K**
$284K/yr · 263K searches
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Okay****1,981.21**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-1.7%**
90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, blood worms for fish is a $284K/yr Amazon United States market (263K searches/yr). The top 5 brands hold 71% of demand. Verdict: Worth a look — 56/100.
Data updated Jul 17, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **blood worms for fish market data**
- **Units sold / yr**
- **20K–25K**
- avg 750–1,000/product
- **Revenue / yr**
- **$252K–$316K**
- units × avg price
- **Launch success**
- **—**
- 1 of 1 new (360d)
- **Conversion rate**
- **8.5%**
- **Avg BSR**
- **#217**
- **Page quality**
- **0%**
- **Prime**
- **96%**
- **Sponsored**
- **67%**
- **Out of stock**
- **3.0%**
- **Avg brand age**
- **74 months**
- **Avg seller age**
- **151 days**
## **Competition & brand share**
The top 5 products take 55% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**16 **▲rising
**Sellers**
**49**
**Top-5 brand share**
**71%**
Top 20: 100%
**Top-5 click share**
**55%**
Top 20: 96%
**Open market**
**24%**
- Hikari18% - FishBites17% - Fluval17% - JADINGSFARM10% - Tetra10% - Dylan's cabin5%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -1.7% search growth over the last 90 days.
5K3KSpike '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.3×
[**Open Trend **](https://flapen.com/research/us/pet-supplies/blood-worms-for-fish/trend)
## **Top blood worms for fish search terms**
- **blood worms for fish**64K/yr-5.8%8.7% conv. - **blood worms**35K/yr+12.4%7.2% conv. - **bloodworms**29K/yr+1.7%7.5% conv. - **frozen bloodworms**21K/yr+0.2%3.2% conv. - **bloodworms fish food**21K/yr-11.8%9.8% conv. - **freeze dried bloodworms**17K/yr+7.1%12.3% conv. - **frozen blood worms for fish**17K/yr-14.7%2.6% conv. - **blood worms for betta**11K/yr-9.2%10.4% conv. - **bloodworm**7K/yr+43.0%2.3% conv. - **frozen blood worms**7K/yr+7.6%2.9% conv. [**All search terms **](https://flapen.com/research/us/pet-supplies/blood-worms-for-fish/search-terms)
## **Top blood worms for fish 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%$14K10%$28K15%$43K20%$57K1101001K10K100K 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**Fluval Betta Freeze Dried Bloodworms 0.18 oz.**Fluval**$4.48**4.6★612 rev](https://www.amazon.com/dp/B0BGGPDCS7) [2**Hikari Bio-Pure Freeze Dried Blood Worms for Pets 0.42-Ounce**Hikari**$9.29**4.6★3,093 rev](https://www.amazon.com/dp/B00025K1GQ) [3**Tetra BloodWorms 0.25 Oz Freeze-Dried Food for Freshwater and Saltwater Fish Seafood (Pack of 1)**Tetra**$4.88**4.5★15,500 rev](https://www.amazon.com/dp/B08F6W32MS) [4**JADINGSFRAM Blood Worms Fish Food 3.5 oz Freeze Dried Bloodworms for Fish Bloodworms Fish Food for Freshwater Saltwater Tropical Fish Betta Cichlid Goldfish Guppy Turtle (3.5 OZ)**JADINGSFARM**$17.02**4.5★200 rev](https://www.amazon.com/dp/B0DLVB3GW4) [5**Fishbites Bag O Worms Bloodworm - Longer Lasting (3/8 Wide Red)**FishBites**$7.64**4.4★553 rev](https://www.amazon.com/dp/B003G7STNE)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**JADINGSFARM Liquid Brine Shrimp Fish Food Enriched Aquarium Feed for All Life Stages Fry Development & Vibrant Fish Colors**JADINGSFARM**$15.74**38 rev4mo ago](https://www.amazon.com/dp/B0GHHMHTMS) [**Vorenzyme Freeze Dried Blood Worms Fish Food - High Protein Natural Aquatic Food for Tropical & Saltwater Fish Betta Goldfish Cichlid Guppy - Enhances Color & Growth 3.5 oz**Vorenzyme**$16.44**61 rev1y ago](https://www.amazon.com/dp/B0FG34JKGQ) [**JADINGSFRAM Blood Worms Fish Food 2.5 oz Freeze Dried Bloodworms for Fish Bloodworms Fish Food for Freshwater Saltwater Tropical Fish Betta Cichlid Goldfish Guppy Turtle (2.5 OZ)**JADINGSFARM**$14.65**200 rev1y ago](https://www.amazon.com/dp/B0F4P8TMSB) [**Aquatic Foods Inc. Freeze-Dried Bloodworms Our Grade A Floating Bloodworms for All Freshwater Fish Marines Corals Anemones Baby Pond Fish0.5oz Squeeze Bottle**Aquatic Foods Inc.**$8.95**63 rev1y ago](https://www.amazon.com/dp/B0DPR3X5M6) [**yizeril Freeze Dried Bloodworms Fish Food - High Protein Aquatic Food for Goldfish Betta Cichlids Guppies Tropical & Saltwater Aquarium (30Z)**yizeril**$14.45**61 rev1y ago](https://www.amazon.com/dp/B0DPGXZSCY)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Fishbites Bag O Worms Bloodworm - Longer Lasting (1/4 Wide Chartreuse)**FishBites**$7.87**4.4★**▲ 269%**](https://www.amazon.com/dp/B0084EE0JG) [**Fishbites Bag OWorms Bloodworm - Fast Acting - Red (1/4 Wide)**FishBites**$7.21**4.3★**▲ 262%**](https://www.amazon.com/dp/B003FS51EO) [**JADINGSFARM Liquid Brine Shrimp Fish Food Enriched Aquarium Feed for All Life Stages Fry Development & Vibrant Fish Colors**JADINGSFARM**$15.74**4.4★**▲ 252%**](https://www.amazon.com/dp/B0GHHMHTMS) [**Fishbites Bag O Worms Bloodworm - Longer Lasting (3/8 Wide Red)**FishBites**$7.64**4.4★**▲ 229%**](https://www.amazon.com/dp/B003G7STNE) [**Fishbites Bag O Worms Bloodworm - Longer Lasting (3/8 Wide Chartreuse)**FishBites**$7.81**4.4★**▲ 226%**](https://www.amazon.com/dp/B0084EE122)
**~~View all trending →~~**
## **What buyers say about blood worms for fish**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**17%
*“Excellent product”*
**Pet Friendly**15%
*“Fish loves it”*
**Taste-Overall**15%
*“Tasty, good treat”*
**Value For Money**9%
*“Cheap price”*
**Ease Of Use**8%
*“Easy to store and use”*
**Size-Overall**7%
*“really good size”*
**Ingredients-Overall**4%
*“Great ingredients and happy fish”*
**Advertised Vs Actual Product**3%
*“Thats what I wanted”*
**Color**3%
*“their colors look great”*
**Freshness**2%
*“Easy to administer and keep fresh”*
### **What buyers complain about **
**Size-Overall**30%
*“Tiny bits”*
**Smell**5%
*“it was immediately hit with a very rancid smell”*
**Quality-Overall**5%
*“these are junk”*
**Ease Of Chewing/Swallowing**5%
*“My betta can't seem to swallow it on the first try”*
**Moist/Dry**4%
*“Ok. They don't hydrate”*
**Value For Money**4%
*“Too expensive”*
**Water Flow**4%
*“You'd think that being dehydrated they'd suck up water like a sponge”*
**Color**4%
*“Dont buy the yellow one”*
**Strength**3%
*“The pieces break apart easily”*
**Ease Of Cleaning**2%
*“Makes the tank very dirty after feeding”*
### **Top return reasons **
**Color**37%
**Size-Overall**13%
**Advertised Vs Actual Product**11%
**Value For Money**11%
**Quality-Overall**7%
**Compatibility-Overall**4%
**Escape Proof**4%
**Leak-Proof**4%
**Moist/Dry**4%
**Defective Material/Parts**4%
## **Common questions**
- **Is blood worms for fish profitable to sell on Amazon United States?**
- The niche generates $284K/yr across 24 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -1.7%. Flapen's verdict: Worth a look (56/100).
- **How competitive is the blood worms for fish niche?**
- 16 brands and 49 sellers compete. The top 5 products take 55% of clicks and top 5 brands hold 71% of demand.
- **What do buyers complain about in blood worms for fish?**
- Top complaints mined from reviews: Size-Overall, Smell, Quality-Overall. The return rate is 0.1%.
- **When does demand for blood worms for fish peak?**
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- **What does it cost to enter the blood worms for fish niche?**
- Listings span $3.69–$44.90; the average listing price is $12.62 (sweet spot $15–$100). The average incumbent carries 1,981 reviews — the moat a new listing must climb.
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