Fish Antibiotic
MaybeBuyers convert on 12.9% of searches. But demand is soft, at -12.7% this quarter, so Fish Antibiotic is a Maybe.
- Flapen Score
- 55 / 100Top 30% of 3,978 Pet Supplies niches · +4 vs the category median of 5155
- Market size
- $2.1M/yr576K searches / yr
- 90-day growth
- -12.7%search demand this quarter
- Competition
- 70%top-5 click share · 6 brands · 58 sellers
Flapen Score
Fish Antibiotic against its category
The dotted line is the Pet Supplies average. Past it, Fish Antibiotic is stronger. Inside it, weaker.
Market
The Fish Antibiotic market on Amazon at a glance
Shoppers on Amazon United States searched for Fish Antibiotic 576K times last year and spent an estimated $2.1M. The top 5 brands take 92% of clicks. Flapen scores it 55 out of 100, a Maybe.
01 · Demand
An estimated 12.9% of those searches ended in a purchase.
Shoppers searched for this 576K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 12.9% of those searches ended in a purchase. Searches in the last 90 days moved -12.7% against the 90 days before. Searches, conversion and average price together put the market at an estimated $2.1M a year.
- Searches, last 12 months
- 576K
- Growth, 90 days vs prior 90
- -12.7%
- Conversion, latest week
- 12.9%
- Market size, estimated
- $2.1Ma year
- Peak month
- February1.4× the quietest month
- Top search term
- kanaplex115K searches a year
02 · Price
A sale here is worth $28.62.
Listings sell for $28.62 on average, from $4.53 to $80.57. Amazon reports units sold in ranges. This niche sold 60K to 80K a year. The average listing sells 4,000 to 5,000 of them. At $28.62 that is $114K to $143K a year per listing.
- Average price
- $28.62inside the $15 to $100 sweet spot
- Price range
- $4.53–$80.57
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 60K–80K
- Units per listing a year
- 4,000–5,000
- Revenue per listing a year
- $114K–$143K
- Returns
- 1.3%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is reviews.
54% of listings pay for placement with sponsored ads. 92% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #87 within Fish & Aquatic Pets. It carries 3,752 reviews at 4.58 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 54%
- Prime listings
- 92%
- Out of stock, average day
- 0.0%
- Average rank
- #87in Fish & Aquatic Pets
- Average rating
- 4.58 starsAmazon United States average 4.42 stars
- Average reviews
- 3,752per listing
- Listings tracked
- 13
04 · Newcomers
Brands here are established.
The brands on the shelf have sold for 69 months on average, so the names here are established.
- Launched, last 12 months
- 0
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 69 months
Products
Top Fish Antibiotic 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
Kanaplex 5 g(0.18 oz)
- Price
- $10.74
- Rating
- 4.6/5
- Reviews
- 3,935
- Age
- 13y 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

API MELAFIX Freshwater Fish Bacterial Infection Remedy 16-Ounce Bottle
- Price
- $14.15
- Rating
- 4.5/5
- Reviews
- 15,244
- Age
- 22y 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

API MELAFIX Freshwater Fish Bacterial Infection Remedy 4-Ounce Bottle
- Price
- $8.47
- Rating
- 4.5/5
- Reviews
- 15,244
- Age
- 22y ago
Trending
estimated 90-day click momentum
API General Cure Powder Packets 10 Count 6 Pack
- Price
- $72.26
- Rating
- 4.7/5
- Reviews
- 149
- Age
- 9y ago

Metroplex METRONlDAZOLE Focus Kanaplex Paraguard Neoplex Sulfaplex Polyguard Garlic Guard Saltwater Freshwater Aquarium lnfection ANTlBlOTlC (Metroplex + Kanaplex + Focus)
- Price
- $29.52
- Rating
- 4.8/5
- Reviews
- 66
- Age
- 2y ago

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

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
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

SMetroplex METRONlDAZOLE Focus Kanaplex Paraguard Neoplex Sulfaplex Polyguard Garlic Guard Saltwater Freshwater Aquarium lnfection ANTlBlOTlC (3 Pack Kanaplex 5g Each)
- Price
- $28.50
- Rating
- 4.7/5
- Reviews
- 104
- Age
- 2y ago

Metroplex METRONlDAZOLE Focus Kanaplex Paraguard Neoplex Sulfaplex Polyguard Garlic Guard Saltwater Freshwater Aquarium lnfection ANTlBlOTlC (Metroplex + Kanaplex + Focus)
- Price
- $29.52
- Rating
- 4.8/5
- Reviews
- 66
- Age
- 2y 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

Ultimate Aquarium Treatment Bundle Pack - Metroplex Kanaplex Focus Garlic Guard - All in One Aquarium Treatment
- Price
- $33.78
- Rating
- 4.6/5
- Reviews
- 837
- Age
- 8y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 70% of clicks. Leaders hold, but buyers still shop past them.
Brands
6 rising
Sellers
58
Est. top-5 brand share
92%
Top 20: 94%
Est. top-5 click share
70%
Top 20: 100%
Open market
2%
- Seachem41%
- API34%
- Fritz Aquatics8%
- --6%
- Generic5%
- Seachem Treatments3%
- Open — no brand owns it (2%)
Demand
Fish Antibiotic search demand
Weekly searches over the year, seasonality beneath. Pick a range.
No pronounced peak months · busiest ÷ quietest = 1.4×
Search terms
Top Fish Antibiotic search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- kanaplex115K/yr
- fish antibiotics110K/yr
- seachem kanaplex31K/yr
- kanaplex fish medication42K/yr
- api general cure33K/yr
- melafix27K/yr
- fish medicine22K/yr
- maracyn25K/yr
- maracyn 222K/yr
- api fin and body cure15K/yr
Reviews and returns
What reviews say buyers love and hate about Fish Antibiotic
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 Fish Antibiotic 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









