swim bladder treatment for fish
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Conversion
Incredible21.2%search→purchase rate — share of searches ending in a sale
Returns
Incredible0.9%return rate — above 6% kills the launch gate
Market size
Good$551K$551K/yr · 225K searches
Avg price
Okay$11.55avg listing price — sweet spot $15–$100
Price range
Okay$4.08–$21.40cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Bad-9.8%90-day search growth — must beat 0% to launch
Review moat
Bad13,379.83avg incumbent reviews — the moat a new listing must climb
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Competition
Bad95%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, swim bladder treatment for fish is a $551K/yr Amazon United States market (225K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Aug–Sep. Verdict: Skip it — 39/100.
Data updated Jul 17, 2026 · scored weekly · How we score niches
swim bladder treatment for fish market data
- Units sold / yr
- 30K–40K
- avg 3,000–4,000/product
- Revenue / yr
- $347K–$462K
- units × avg price
- Launch success
- —
- 0 of 0 new (360d)
- Conversion rate
- 21.2%
- Avg BSR
- #57
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 17%
- Out of stock
- 0.0%
- Avg brand age
- 88 months
- Avg seller age
- 166 days
Competition & brand share
The top 5 products capture 95% of clicks — a locked-up shelf that new listings rarely crack.Brands
4 falling
Sellers
32
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
95%
Top 20: 100%
Open market
0%
- API64%
- Tetra22%
- Mars Fishcare North Amer8%
- Instant Ocean6%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -9.8% search growth over the last 90 days.Peak months: Aug, Sep · busiest ÷ quietest = 1.7×
Top swim bladder treatment for fish search terms
- aquarium salt144K/yr
- aquarium salt freshwater31K/yr
- api aquarium salt14K/yr
- aquarium salt for freshwater tank12K/yr
- aquarium salt for betta fish6K/yr
- fish tank salt4K/yr
- brine shrimp salt3K/yr
- fish salt2K/yr
- freshwater aquarium salt4K/yr
- api salt2K/yr
Top swim bladder treatment for fish 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 6 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
API AQUARIUM SALT Freshwater Aquarium Salt 36-Ounce Box
API$8.944.7★23,796 rev
Tetra Aquarium Salt for Freshwater Fish Tanks 16 Ounces Salt for Tropical and Goldfish Aquariums Enhances the Health of Your Aquatic Pets
Tetra$4.084.8★282 rev
API AQUARIUM SALT Freshwater Aquarium Salt 17-Ounce Box
API$8.214.7★23,796 rev
Aquarium Salt 1 Qt
Mars Fishcare North Amer$14.144.7★185 rev
Instant Ocean Sea Salt 50 Gallons For Marine Aquariums Fast Dissolving
Instant Ocean$21.404.8★8,424 rev
Newest
by launch dateTetra Aquarium Salt for Freshwater Fish Tanks 16 Ounces Salt for Tropical and Goldfish Aquariums Enhances the Health of Your Aquatic Pets
Tetra$4.08282 rev
Aquarium Salt 1 Qt
Mars Fishcare North Amer$14.14185 rev
API AQUARIUM SALT Freshwater Aquarium Salt 17-Ounce Box
API$8.2123,796 rev
API AQUARIUM SALT Freshwater Aquarium Salt 67-Ounce Box
API$12.5323,796 rev
API AQUARIUM SALT Freshwater Aquarium Salt 36-Ounce Box
API$8.9423,796 rev
Trending
90-day click momentumTetra Aquarium Salt for Freshwater Fish Tanks 16 Ounces Salt for Tropical and Goldfish Aquariums Enhances the Health of Your Aquatic Pets
Tetra$4.084.8★
API AQUARIUM SALT Freshwater Aquarium Salt 36-Ounce Box
API$8.944.7★
API AQUARIUM SALT Freshwater Aquarium Salt 17-Ounce Box
API$8.214.7★
Instant Ocean Sea Salt 50 Gallons For Marine Aquariums Fast Dissolving
Instant Ocean$21.404.8★
Aquarium Salt 1 Qt
Mars Fishcare North Amer$14.144.7★
What buyers say about swim bladder treatment for fish
What buyers praise and complain about, mined from review topics.What buyers love
“High quality from API”
“budget-friendly”
“As advertised”
“Nice size”
“Good for fish”
“easy-to-use”
“Great for aquarium”
“not was leaking out”
“Would last me years”
“Calms stressed fish”
What buyers complain about
“The bag opening is so small that you can barely get a measuring spoon in it”
“1 qt of salt for $12.00 is ridiculous”
“Box will get wet”
“lost a couple fish”
“It's a bit granular”
Top return reasons
Common questions
- Is swim bladder treatment for fish profitable to sell on Amazon United States?
- The niche generates $551K/yr across 6 tracked products. 90-day search growth is -9.8%. Flapen's verdict: Skip it (39/100).
- How competitive is the swim bladder treatment for fish niche?
- 4 brands and 32 sellers compete. The top 5 products take 95% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in swim bladder treatment for fish?
- Top complaints mined from reviews: Size-Overall, Value For Money, Moist/Dry. The return rate is 0.9%.
- When does demand for swim bladder treatment for fish peak?
- Demand peaks in Aug–Sep; the busiest month runs 1.7× the quietest.
- What does it cost to enter the swim bladder treatment for fish niche?
- Listings span $4.08–$21.40; the average listing price is $11.55 (sweet spot $15–$100). The average incumbent carries 13,380 reviews — the moat a new listing must climb.