fish medicine for freshwater
Skip itA small market ($44K/yr) — this niche doesn't clear our bar today.
Returns
Incredible0.9%return rate — above 6% kills the launch gate
Price range
Great$4.53–$80.57cheapest to priciest tracked listing — scored on the share inside $15–$100
Avg price
Great$16.46avg listing price — sweet spot $15–$100
Conversion
Good6.0%search→purchase rate — share of searches ending in a sale
Competition
Good47%top-5 click share — leaders hold, buyers still browse
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Review moat
Bad5,028.44avg incumbent reviews — the moat a new listing must climb
Brand share
Bad92%top-5 brand share — brand-locked demand
Growth
Bad-16.8%90-day search growth — must beat 0% to launch
Market size
Bad$44K$44K/yr · 44K searches
According to Flapen's Amazon United States niche tracking, fish medicine for freshwater is a $44K/yr Amazon United States market (44K searches/yr). The top 5 brands hold 92% of demand. Verdict: Skip it — 45/100.
Data updated Jul 17, 2026 · scored weekly · How we score niches
fish medicine for freshwater market data
- Units sold / yr
- 3K–4K
- avg 100–250/product
- Revenue / yr
- $49K–$66K
- units × avg price
- Launch success
- —
- 0 of 0 new (360d)
- Conversion rate
- 6.0%
- Avg BSR
- #86
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 63%
- Out of stock
- 3.6%
- Avg brand age
- 110 months
- Avg seller age
- 164 days
Competition & brand share
The top 5 products take 47% of clicks — established leaders, but buyers still shop beyond them.Brands
9 falling
Sellers
81
Top-5 brand share
92%
Top 20: 100%
Top-5 click share
47%
Top 20: 89%
Open market
5%
- API56%
- Seachem15%
- MICROBE-LIFT10%
- Fritz Aquatics6%
- Hikari5%
- Kordon3%
- Open — no brand owns it (3 brands, 5%)
Demand & seasonality
Weekly Amazon search volume, last 76 weeks — -16.8% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.4×
Top fish medicine for freshwater search terms
- fish medicine22K/yr
- fish medicine for freshwater12K/yr
- fish medication5K/yr
- fish parasite treatment5K/yr
Top fish medicine for freshwater 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 32 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
API MELAFIX Freshwater Fish Bacterial Infection Remedy 16-Ounce Bottle
API$14.154.5★15,244 rev
API LIQUID SUPER ICK CURE Fish remedy Freshwater and Saltwater Fish Medication 4 fl oz(Pack of 1) White
API$7.234.5★11,785 rev
API FIN & BODY CURE Freshwater Fish Powder Medication 10-Count Box
API$16.114.4★3,763 rev
API MELAFIX Freshwater Fish Bacterial Infection Remedy 4-Ounce Bottle
API$8.474.5★15,244 rev
API PIMAFIX Antifungal Freshwater and Saltwater Fish Remedy 16-Ounce Bottle
API$11.894.5★8,102 rev
Newest
by launch date
Fritz Maracyn - for Saltwater and Freshwater gram-Positive Relief from Bacterial gil Popeye More - Easy dose Packets 20 Count
Fritz Aquatics$36.23304 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
MICROBE-LIFT ART08 Artemiss Immune Booster and Disease Treatment for Fish Health in Freshwater and Saltwater Aquariums 8 Fl Oz
MICROBE-LIFT$14.24316 rev
Absolute Wormer - Freshwater and Saltwater Fish Powder Medication. with parasites and Flukes. (5G - Treats 600 GALLONS)
Absolute Wormer$23.76434 rev
Trending
90-day click momentum
MICROBE-LIFT Special Blend Aquarium Water Care Treatment Cleaner & Clarifier for Fresh and Saltwater Fish Tanks Reduces Maintenance & Helps with Aquarium Algae Control and Odor 4 Ounces (SBH04)
MICROBE-LIFT$9.024.3★
MICROBE-LIFT Herbtana Fish Medicine Immune Booster and Parasite Treatment for Aquarium Fish Health Ich Treatment Use in Freshwater Tank or Saltwater Aquarium 8 Ounces (HERB08)
MICROBE-LIFT$12.934.2★
Seachem ParaGuard 500 mL / 16.9 fl. oz. - 603
Seachem$17.064.7★
Seachem KanaPlex Size: 100 g Treats Fungal and Bacterial Fish Diseases
Seachem$80.574.6★
Seachem ParaGuard 250ml
Seachem$12.154.6★
What buyers say about fish medicine for freshwater
What buyers praise and complain about, mined from review topics.What buyers love
“Excellent product”
“Price is affordable”
“Easy to use”
“Worked as advertised”
“The instructions are very clear”
“Theres a very mild scent”
“Its very pretty”
“Clean sweep of flukes”
“It helps promote clear water”
“Strong”
What buyers complain about
“there were worms almost everywhere in the water”
“Which cost me a lot of money”
“within 5 minutes both of my betta fish died”
“Did not work well”
“This thing smells like rotten eggs”
“Bottle was smaller than expected”
“from not being able to breath”
“Blue blue blue stained everywhere”
“The instructions were scratched off”
“product leaked all over the place”
Top return reasons
Common questions
- Is fish medicine for freshwater profitable to sell on Amazon United States?
- The niche generates $44K/yr across 32 tracked products. 90-day search growth is -16.8%. Flapen's verdict: Skip it (45/100).
- How competitive is the fish medicine for freshwater niche?
- 9 brands and 81 sellers compete. The top 5 products take 47% of clicks and top 5 brands hold 92% of demand.
- What do buyers complain about in fish medicine for freshwater?
- Top complaints mined from reviews: Contamination, Value For Money, Durability. The return rate is 0.9%.
- When does demand for fish medicine for freshwater peak?
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- What does it cost to enter the fish medicine for freshwater niche?
- Listings span $4.53–$80.57; the average listing price is $16.46 (sweet spot $15–$100). The average incumbent carries 5,028 reviews — the moat a new listing must climb.