fish-zole (metronidazole 250mg)
Skip itBrand-locked demand (top 5 brands take 95% of clicks) — this niche doesn't clear our bar today.
Returns
Great1.2%return rate — above 6% kills the launch gate
Avg price
Great$19.82avg listing price — sweet spot $15–$100
Price range
Great$7.23–$72.26cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Good6.4%search→purchase rate — share of searches ending in a sale
Growth
Okay+8.1%90-day search growth — must beat 0% to launch
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Competition
Okay68%top-5 click share — leaders hold, buyers still browse
Market size
Okay$104K$104K/yr · 81K searches
Review moat
Bad4,201.47avg incumbent reviews — the moat a new listing must climb
Brand share
Bad95%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, fish-zole (metronidazole 250mg) is a $104K/yr Amazon United States market (81K searches/yr). The top 5 brands hold 95% of demand. Verdict: Skip it — 44/100.
Data updated Jul 17, 2026 · scored weekly · How we score niches
fish-zole (metronidazole 250mg) market data
- Units sold / yr
- 10K–13K
- avg 250–500/product
- Revenue / yr
- $198K–$248K
- units × avg price
- Launch success
- —
- 0 of 0 new (360d)
- Conversion rate
- 6.4%
- Avg BSR
- #79
- Page quality
- 0%
- Prime
- 95%
- Sponsored
- 68%
- Out of stock
- 1.3%
- Avg brand age
- 100 months
- Avg seller age
- 165 days
Competition & brand share
The top 5 products take 68% of clicks — established leaders, but buyers still shop beyond them.Brands
9 flat
Sellers
66
Top-5 brand share
95%
Top 20: 100%
Top-5 click share
68%
Top 20: 100%
Open market
3%
- API58%
- Seachem18%
- ีUSA8%
- Fritz Aquatics8%
- Hikari3%
- MICROBE-LIFT2%
- Open — no brand owns it (3 brands, 3%)
Demand & seasonality
Weekly Amazon search volume, last 67 weeks — +8.1% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.4×
Top fish-zole (metronidazole 250mg) search terms
- api general cure33K/yr
- metronidazole for fish15K/yr
- general cure fish medication11K/yr
- general cure7K/yr
- fish-zole (metronidazole 250mg)7K/yr
- api general cure freshwater5K/yr
- fish zole2K/yr
Top fish-zole (metronidazole 250mg) 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.
All 19 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
API General Cure Powder Packets 10 Count 6 Pack
API$72.264.7★149 rev
API FIN & BODY CURE Freshwater Fish Powder Medication 10-Count Box
API$16.114.4★3,763 rev
Seachem Metronidazole 5 g(0.18 oz)
Seachem$9.864.5★1,034 rev
Seachem MetroPlex Metronidazole Parasite Bacteria SALTWATER FRESHWATER Aquarium
ีUSA$11.624.6★834 rev
Fritz Aquatics ParaCleanse Provides Fast Relief from Parasitic Diseases (20-Count)
Fritz Aquatics$22.414.6★376 rev
Newest
by launch date
Metroplex METRONlDAZOLE Focus Kanaplex Paraguard Neoplex Sulfaplex Polyguard Garlic Guard Saltwater Freshwater Aquarium lnfection ANTlBlOTlC (Metroplex + Kanaplex + Focus)
Generic$29.5266 rev
API Liquid Super ICK Cure Freshwater and Saltwater Fish Medication 16-Ounce Bottle
API$19.9711,785 rev
Fritz Aquatics ParaCleanse Provides Fast Relief from Parasitic Diseases (20-Count)
Fritz Aquatics$22.41376 rev
Absolute Wormer - Freshwater and Saltwater Fish Powder Medication. with parasites and Flukes. (5G - Treats 600 GALLONS)
Absolute Wormer$23.76434 rev
Seachem SC 10g POLYGUARD 0.4oz
Seachem$9.98395 rev
Trending
90-day click momentumAPI General Cure Powder Packets 10 Count 6 Pack
API$72.264.7★
Seachem ParaGuard 500 mL / 16.9 fl. oz. - 603
Seachem$17.064.7★
Seachem SC 10g POLYGUARD 0.4oz
Seachem$9.984.7★
Fritz Aquatics ParaCleanse Provides Fast Relief from Parasitic Diseases (20-Count)
Fritz Aquatics$22.414.6★
API Liquid Super ICK Cure Freshwater and Saltwater Fish Medication 16-Ounce Bottle
API$19.974.5★
What buyers say about fish-zole (metronidazole 250mg)
What buyers praise and complain about, mined from review topics.What buyers love
“Fish med great”
“Easy to use”
“Price is affordable”
“Worked as advertised”
“the instructions are clear enough”
“Clean sweep of flukes”
“Strong”
“Helped quickly”
“I love the smell”
“My glofish is still bright pink”
What buyers complain about
“died very quickly after that”
“It is definitely expensive for the small amount”
“Caused fish d**th”
“Unfortunately, it did not work in my case”
“Blue blue blue stained everywhere”
“This thing smells like rotten eggs”
“He's having trouble breathing”
“the product inside had leaked out some due to a loose cap and no seal”
“If your fish seem itchy, or irritated and you notice a lot of flashing or rubbing”
“Never easy to use”
Top return reasons
Common questions
- Is fish-zole (metronidazole 250mg) profitable to sell on Amazon United States?
- The niche generates $104K/yr across 19 tracked products. 90-day search growth is +8.1%. Flapen's verdict: Skip it (44/100).
- How competitive is the fish-zole (metronidazole 250mg) niche?
- 9 brands and 66 sellers compete. The top 5 products take 68% of clicks and top 5 brands hold 95% of demand.
- What do buyers complain about in fish-zole (metronidazole 250mg)?
- Top complaints mined from reviews: Durability, Value For Money, Contamination. The return rate is 1.2%.
- When does demand for fish-zole (metronidazole 250mg) peak?
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- What does it cost to enter the fish-zole (metronidazole 250mg) niche?
- Listings span $7.23–$72.26; the average listing price is $19.82 (sweet spot $15–$100). The average incumbent carries 4,201 reviews — the moat a new listing must climb.