Maracyn
FailThe top 5 brands take 100% of clicks, so Maracyn is a Fail.
- Flapen Score
- 43 / 100Ranks 3,065 of 3,978 Pet Supplies niches · −8 vs the category median of 5143
- Market size
- $319K/yr170K searches / yr
- 90-day growth
- -16.9%search demand this quarter
- Competition
- 89%top-5 click share · 4 brands · 47 sellers
Flapen Score
Maracyn against its category
The dotted line is the Pet Supplies average. Past it, Maracyn is stronger. Inside it, weaker.
Market
The Maracyn market on Amazon at a glance
Shoppers on Amazon United States searched for Maracyn 170K times last year and spent an estimated $319K. All 4 brands take every click. Demand peaks in Mar–Apr–Jul. Flapen scores it 43 out of 100, a Fail.
01 · Demand
An estimated 9.6% of those searches ended in a purchase.
Shoppers searched for this 170K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 9.6% of those searches ended in a purchase. Searches in the last 90 days moved -16.9% against the 90 days before. Searches, conversion and average price together put the market at an estimated $319K a year.
- Searches, last 12 months
- 170K
- Growth, 90 days vs prior 90
- -16.9%
- Conversion, latest week
- 9.6%
- Market size, estimated
- $319Ka year
- Peak month
- April3.2× the quietest month
- Top search term
- maracyn25K searches a year
02 · Price
A sale here is worth $19.46.
Listings sell for $19.46 on average, from $4.53 to $36.89. Amazon reports units sold in ranges. This niche sold 13K to 15K a year. The average listing sells 1,250 to 1,500 of them. At $19.46 that is $24K to $29K a year per listing.
- Average price
- $19.46inside the $15 to $100 sweet spot
- Price range
- $4.53–$36.89
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 13K–15K
- Units per listing a year
- 1,250–1,500
- Revenue per listing a year
- $24K–$29K
- Returns
- 1.2%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is reviews.
67% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #128 within Fish & Aquatic Pets. It carries 5,240 reviews at 4.46 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 67%
- Prime listings
- 100%
- Out of stock, average day
- 0.0%
- Average rank
- #128in Fish & Aquatic Pets
- Average rating
- 4.46 starsAmazon United States average 4.42 stars
- Average reviews
- 5,240per listing
- Listings tracked
- 9
04 · Newcomers
0 of last year's 1 launches cleared the first-year sales bar.
1 products launched here in the last 12 months. 0 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 61 months on average, so the names here are established.
- Launched, last 12 months
- 1
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 61 months
Products
Top Maracyn products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 17, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
API FIN & BODY CURE Freshwater Fish Powder Medication 10-Count Box
- Price
- $16.11
- Rating
- 4.4/5
- Reviews
- 3,763
- Age
- 9y ago

Fritz Maracyn - for Saltwater and Freshwater gram-Positive Relief from Bacterial gil Popeye More - Easy dose Packets 20 Count
- Price
- $36.23
- Rating
- 4.6/5
- Reviews
- 304
- Age
- 2y ago

Kanaplex 5 g(0.18 oz)
- Price
- $10.74
- Rating
- 4.6/5
- Reviews
- 3,935
- Age
- 13y ago

API 2 Pack of Fin and Body Cure Freshwater Fish Medication Powder for Treatment of Bacterial Diseases Treats Body Slime Eye Cloud Fin and Tail Rot and Gill Disease (10-Count) (2 items)
- Price
- $25.60
- Rating
- 4.5/5
- Reviews
- 478
- Age
- 7y ago

API MELAFIX Freshwater Fish Bacterial Infection Remedy 16-Ounce Bottle
- Price
- $14.15
- Rating
- 4.5/5
- Reviews
- 15,244
- Age
- 22y ago
Trending
estimated 90-day click momentum
Magrank Women Checkered Jeans High Waisted Denim Capri Pants Race Day Black White Gingham Stretchy Baggy Jean S
- Price
- $36.89
- Rating
- 4.0/5
- Reviews
- 70
- Age
- 7mo ago

API FIN & BODY CURE Freshwater Fish Powder Medication 10-Count Box
- Price
- $16.11
- Rating
- 4.4/5
- Reviews
- 3,763
- Age
- 9y ago

Kanaplex 5 g(0.18 oz)
- Price
- $10.74
- Rating
- 4.6/5
- Reviews
- 3,935
- Age
- 13y ago

API MELAFIX Freshwater Fish Bacterial Infection Remedy 4-Ounce Bottle
- Price
- $8.47
- Rating
- 4.5/5
- Reviews
- 15,244
- Age
- 22y ago

API 2 Pack of Fin and Body Cure Freshwater Fish Medication Powder for Treatment of Bacterial Diseases Treats Body Slime Eye Cloud Fin and Tail Rot and Gill Disease (10-Count) (2 items)
- Price
- $25.60
- Rating
- 4.5/5
- Reviews
- 478
- Age
- 7y ago
Newest
by launch date
Magrank Women Checkered Jeans High Waisted Denim Capri Pants Race Day Black White Gingham Stretchy Baggy Jean S
- Price
- $36.89
- Rating
- 4.0/5
- Reviews
- 70
- Age
- 7mo ago

Fritz Maracyn - for Saltwater and Freshwater gram-Positive Relief from Bacterial gil Popeye More - Easy dose Packets 20 Count
- Price
- $36.23
- Rating
- 4.6/5
- Reviews
- 304
- Age
- 2y ago

Fritz Aquatics ParaCleanse Provides Fast Relief from Parasitic Diseases (20-Count)
- Price
- $22.41
- Rating
- 4.6/5
- Reviews
- 376
- Age
- 4y ago

API 2 Pack of Fin and Body Cure Freshwater Fish Medication Powder for Treatment of Bacterial Diseases Treats Body Slime Eye Cloud Fin and Tail Rot and Gill Disease (10-Count) (2 items)
- Price
- $25.60
- Rating
- 4.5/5
- Reviews
- 478
- Age
- 7y ago

API FIN & BODY CURE Freshwater Fish Powder Medication 10-Count Box
- Price
- $16.11
- Rating
- 4.4/5
- Reviews
- 3,763
- Age
- 9y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 89% of clicks. A locked shelf that new listings rarely crack.
Brands
4 flat
Sellers
47
Est. top-5 brand share
100%
Top 20: 100%
Est. top-5 click share
89%
Top 20: 100%
Open market
0%
- API53%
- Fritz Aquatics36%
- Seachem8%
- Magrank2%
- Open — no brand owns it (0%)
Demand
Maracyn search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Mar, Apr, Jul · busiest ÷ quietest = 3.2×
Search terms
Top Maracyn search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- maracyn25K/yr
- maracyn 222K/yr
- api fin and body cure15K/yr
- erythromycin for fish19K/yr
- fritz maracyn12K/yr
- api em erythromycin11K/yr
- doxycycline for fish9K/yr
- furan 27K/yr
- tetracycline for fish6K/yr
- maracyn two4K/yr
Reviews and returns
What reviews say buyers love and hate about Maracyn
We read the reviews and the return reasons for every product selling here.
“it nearly killed everything in under an hour”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
21 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Maracyn questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









