Fish Fertilizer for Plants
Launch itA $1.5M/yr market growing +155.3% this quarter with returns at 0.3% — clears our launch bar.
Returns
Incredible0.3%return rate — above 5% kills the launch gate
Growth
Incredible+155.3%90-day search growth — must beat 0% to launch
Avg price
Great$21.90avg listing price — sweet spot $15–$100
Conversion
Great10.3%search→purchase rate — share of searches ending in a sale
Market size
Great$1.5M$1.5M/yr · 664K searches
Price range
Great$10.15–$40.30cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Okay2,417avg incumbent reviews — the moat a new listing must climb
Brand share
Bad91%top-5 brand share — brand-locked demand
Quality gap
Bad4.6★avg incumbent rating — lower means beatable quality
Competition
Bad76%top-5 click share — a locked-up shelf
Is fish fertilizer for plants profitable on Amazon?
According to Flapen's Amazon United States niche tracking, fish fertilizer for plants is a $1.5M/yr Amazon United States market (664K searches/yr). The top 5 brands hold 91% of demand. Demand peaks in Apr–May–Jun–Jul. Verdict: Launch it — 65/100.
Data updated Jul 15, 2026 · scored weekly · How we score niches
fish fertilizer for plants market size & sales
Units sold, revenue, conversion and listing quality across the tracked shelf.- Units sold / yr
- 60K–80K
- avg 4,000–5,000/product
- Revenue / yr
- $1.3M–$1.8M
- units × avg price
- Conversion rate
- 10.3%
- Avg BSR
- #408
- Page quality
- 0%
- Prime
- 92%
- Sponsored
- 92%
- Out of stock
- 0.0%
- Avg brand age
- 90 months
- Avg seller age
- 145 days
Competition: brands, sellers & click share
The top 5 products capture 76% of clicks — a locked-up shelf that new listings rarely crack.Brands
8 falling
Sellers
111
Top-5 brand share
91%
Top 20: 100%
Top-5 click share
76%
Top 20: 100%
Open market
5%
- Alaska45%
- TPS NUTRIENTS19%
- Bloom City11%
- Neptune's Harvest10%
- The Grow Co6%
- Lilly Miller4%
- Open — no brand owns it (2 brands, 5%)
fish fertilizer for plants demand & seasonality
Weekly Amazon search volume, last 102 weeks — +155.3% search growth over the last 90 days.Peak months: Apr, May, Jun, Jul · busiest ÷ quietest = 8.5×
Top fish fertilizer for plants search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.- fish fertilizer123K/yr
- fish emulsion fertilizer124K/yr
- fish fertilizer for plants129K/yr
- alaska fish fertilizer93K/yr
- fish emulsion42K/yr
- fish fertilizer for vegetables24K/yr
- alaskan fish fertilizer24K/yr
- alaska fish fertilizer 5-1-118K/yr
- fish fertilizer for vegetable garden10K/yr
- fish emulsion fertilizer organic13K/yr
Top fish fertilizer for plants products & what they sell for
Every tracked product — its share of the shelf, its review moat, and what it sells for.Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 13 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Alaska Fish Fertilizer OMRI Listed 5-1-1
Alaska$26.614.7★886 rev
Fish Emulsion Fertilizer Liquid Salmon Supplement for Fast Nutrient Uptake Lush Green Growth & Stronger Roots 8 oz
TPS NUTRIENTS$11.894.6★309 rev
Organic Wild Fish Fertilizer and Plant Supplement Great for Roots and Soil Made from Sustainable Salmon by Bloom City 1/2 Pint (8 oz)
Bloom City$11.444.6★1,694 rev
1 Gallon Organic Fish Emulsion Fertilizer for Plants - Ideal Liquid Fish Fertilizer for Plants Flowers Fruits & Vegetables 2-3-1 NPK - Sustainably Sourced and Hydrolyzed for Steady Growth
The Grow Co$29.924.7★619 rev
Lilly Miller Alaska Fish Fertilizer 5-1-1 Concentrate 1 Quart (2-Pack)
Lilly Miller$28.414.7★819 rev
Newest
by launch dateAlaska Fish Fertilizer OMRI Listed 5-1-1
Alaska$26.61886 rev
Fish Emulsion Fertilizer Liquid Salmon Supplement for Fast Nutrient Uptake Lush Green Growth & Stronger Roots 8 oz
TPS NUTRIENTS$11.89309 rev
Fish Fertilizer Liquid Fish Supplement for Lush Growth Deep Green Leaves & Strong Roots 8 oz
TPS NUTRIENTS$10.1553 rev
Organic Wild Fish Fertilizer and Plant Supplement Great for Roots and Soil Made from Sustainable Salmon by Bloom City 1/2 Pint (8 oz)
Bloom City$11.441,694 rev
1 Gallon Organic Fish Emulsion Fertilizer for Plants - Ideal Liquid Fish Fertilizer for Plants Flowers Fruits & Vegetables 2-3-1 NPK - Sustainably Sourced and Hydrolyzed for Steady Growth
The Grow Co$29.92619 rev
Trending
90-day click momentumFish Fertilizer Liquid Fish Supplement for Lush Growth Deep Green Leaves & Strong Roots 8 oz
TPS NUTRIENTS$10.154.3★
Organic Wild Fish Fertilizer and Plant Supplement Great for Roots and Soil Made from Sustainable Salmon by Bloom City Quart (32 oz)
Bloom City$18.514.6★
Lilly Miller Alaska Fish Fertilizer 5-1-1 Concentrate 1 Quart (2-Pack)
Lilly Miller$28.414.7★
Fish Emulsion Fertilizer Liquid Salmon Supplement for Fast Nutrient Uptake Lush Green Growth & Stronger Roots 8 oz
TPS NUTRIENTS$11.894.6★
Neptunes Harvest Fish & Seaweed Liquid Fertilizer (2-3-1) - 18oz Pint - Plant Food for Garden - Indoor & Outdoor Organic Plant Fertilizer for Vegetables Flowers Fruit Trees & Lawns
Neptune's Harvest$17.994.7★
What reviews say buyers love and hate about fish fertilizer for plants
What buyers praise and complain about, mined from review topics.What buyers love
“This product really helped my plants grow”
“Smell was not bad”
“* Excellent gentle organic nitrogen source for steady growth”
“Easy to use”
“its so worth it”
“As advertised”
“Highly effective”
“My garden thanks me with vibrant colors”
“Lasts well”
“Good value for the bottle size”
What buyers complain about
“Nasty smell”
“Arrived leaking”
“Beware of how small this is”
“Didnt provide any benefit to my plants”
“Stinky”
“Can burn plants if not diluted enough, be cautious, more is not better”
“can create a mess”
“Bad value”
“Not for indoor plants”
“Looked like part of it has been used”
Top return reasons
Common fish fertilizer for plants questions
- Is fish fertilizer for plants profitable to sell on Amazon United States?
- The niche generates $1.5M/yr across 13 tracked products. 90-day search growth is +155.3%. Flapen's verdict: Launch it (65/100).
- How competitive is the fish fertilizer for plants niche?
- 8 brands and 111 sellers compete. The top 5 products take 76% of clicks and top 5 brands hold 91% of demand.
- What do buyers complain about in fish fertilizer for plants?
- Top complaints mined from reviews: Smell, Leak-Proof, Size-Overall. The return rate is 0.3%.
- When does demand for fish fertilizer for plants peak?
- Demand peaks in Apr–May–Jun–Jul; the busiest month runs 8.5× the quietest.
- What does it cost to enter the fish fertilizer for plants niche?
- Listings span $10.15–$40.30; the average listing price is $21.90 (sweet spot $15–$100). The average incumbent carries 2,417 reviews — the moat a new listing must climb.