Is fish oil for cats profitable to sell on Amazon United States?

The niche generates $1.4M/yr across 13 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is -7.5%. Flapen's verdict: Worth a look (54/100).

How competitive is the fish oil for cats niche?

9 brands and 13 sellers compete. The top 5 products take 79% of clicks and top 5 brands hold 89% of demand.

What do buyers complain about in fish oil for cats?

Top complaints mined from reviews: Smell, Leak-Proof, Allergies. The return rate is 0.0%.

When does demand for fish oil for cats peak?

Demand peaks in May–Jun–Jul; the busiest month runs 3.6× the quietest.

What does it cost to enter the fish oil for cats niche?

Listings span $10.03–$35.34; the average listing price is $19.42 (sweet spot $15–$100). The average incumbent carries 21,290 reviews — the moat a new listing must climb.

fish oil for cats

Worth a look

Shows low returns (0.0%), but a deep review moat (21,290 avg reviews) keeps it on the watch list.

Returns

Incredible0.0%

return rate — above 6% kills the launch gate

Conversion

Great10.2%

search→purchase rate — share of searches ending in a sale

Avg price

Great$19.42

avg listing price — sweet spot $15–$100

Market size

Great$1.4M

$1.4M/yr · 686K searches

Price range

Great$10.03–$35.34

cheapest to priciest tracked listing — scored on the share inside $15–$100

Quality gap

Good4.5★

avg incumbent rating — lower means beatable quality

Brand share

Okay89%

top-5 brand share — brands hold most of the demand

Growth

Bad-7.5%

90-day search growth — must beat 0% to launch

Competition

Bad79%

top-5 click share — a locked-up shelf

Review moat

Bad21,289.85

avg incumbent reviews — the moat a new listing must climb

According to Flapen's Amazon United States niche tracking, fish oil for cats is a $1.4M/yr Amazon United States market (686K searches/yr). The top 5 brands hold 89% of demand. Demand peaks in May–Jun–Jul. Verdict: Worth a look — 54/100.

Data updated Jul 17, 2026 · scored weekly · How we score niches

fish oil for cats market data

Units sold / yr: 60K–80K; avg 6,000–8,000/product
Revenue / yr: $1.2M–$1.6M; units × avg price
Launch success: —; 1 of 2 new (360d)
Conversion rate: 10.2%
Avg BSR: #20
Page quality: 0%
Prime: 100%
Sponsored: 100%
Out of stock: 0.0%
Avg brand age: 66 months
Avg seller age: 160 days

Competition & brand share

The top 5 products capture 79% of clicks — a locked-up shelf that new listings rarely crack.

Brands

9 rising

Sellers

Top-5 brand share

89%

Top 20: 100%

Top-5 click share

79%

Top 20: 100%

Open market

Zesty Paws57%
HEAPETS13%
Nordic Naturals9%
Native Pet6%
Pet Honesty5%
Vital Pet Life3%
Open — no brand owns it (3 brands, 8%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -7.5% search growth over the last 90 days.

Peak months: May, Jun, Jul · busiest ÷ quietest = 3.6×

Open Trend

Top fish oil for cats search terms

salmon oil for cats176K/yr -12.2%8.1% conv.
fish oil for cats115K/yr -16.0%7.9% conv.
omega 3 for cats88K/yr -0.7%6.9% conv.
zesty paws salmon oil76K/yr -18.6%9.3% conv.
cat fish oil38K/yr -6.7%9.0% conv.
omega 3 fish oil for cats27K/yr -6.3%6.8% conv.
cat omega 319K/yr +13.1%8.1% conv.
zesty paws wild alaskan salmon oil17K/yr +8.2%10.7% conv.
cat salmon oil24K/yr -15.7%8.2% conv.
cat omega 3 supplement12K/yr +17.0%7.1% conv.

All search terms

Top fish oil for cats 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 13 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Zesty Paws Wild Alaskan Omega-3 Blend Pollock + Salmon Oil for Dogs and Cats- Skin and Coat Support Omega 3 Supplement for Pets 8.5oz

Zesty Paws$16.724.5★69,762 rev

Zesty Paws Wild Alaskan Omega-3 Blend Pollock + Salmon Oil for Dogs and Cats- Skin and Coat Support Omega 3 Supplement for Pets 32oz

Zesty Paws$35.344.5★69,762 rev

Wild Alaskan Salmon Oil for Dogs & Cats Fish Oil Omega 3 Supplements with EPA & DHA for Skin & Coat Immune Brain Joint and Heart Health Dog & Cat Fish Oil Supplements with Pump- 8 oz

HEAPETS$10.184.4★1,035 rev

Nordic Naturals Omega-3 Cat Unflavored - 2 oz - 304 mg Omega-3 Per One mL - Fish Oil for Cats with EPA & DHA - Promotes Heart Skin Coat & Immune Health - Non-GMO

Nordic Naturals$15.214.2★2,300 rev

Native Pet Omega 3 Fish Oil for Dogs & Cats Wild Alaskan Salmon Oil for Dogs Skin and Coat Supports Joints Heart & Shedding Fast-Absorbing Omega 3 6 9 Liquid Supplement 8oz

Native Pet$15.474.4★15,697 rev

Newest

by launch date

Wild Alaskan Salmon Oil for Dogs + Cats - 100% Pure Natural Omega 3 Fish Oil Supplement for Pet Skin Coat Health Allergy Itch Relief EPA DHA Fatty Acids for Dog Joint Support Heart Wellness (8 oz)

Pet Honesty$16.058,038 rev

1mo ago

Premium Salmon Oil for Cats Pure Norwegian Salmon Oil High in Omega 3 EPA & DHA -Powerful Fish Oil for Cats Skin & Coat Hip & Joints Allergies & Immunity Omega 3 Fish Oil - 4oz Liquid

WONDER PAWS$10.0399 rev

6mo ago

Wild Alaskan Salmon Oil for Dogs & Cats Fish Oil Omega 3 Supplements with EPA & DHA for Skin & Coat Immune Brain Joint and Heart Health Dog & Cat Fish Oil Supplements with Pump- 8 oz

HEAPETS$10.181,035 rev

1y ago

Salmon Oil for Dogs and Cats 32 oz - Omega-Rich Supplement for Healthy Skin & Coat Joint & Immune Support - All-Natural Fish Oil Liquid - Premium Pet Care Made in USA

Chew + Heal Labs$28.284,305 rev

2y ago

Zesty Paws Wild Alaskan Omega-3 Blend Pollock + Salmon Oil for Dogs and Cats- Skin and Coat Support Omega 3 Supplement for Pets 16oz

Zesty Paws$28.3769,762 rev

2y ago

What buyers say about fish oil for cats

What buyers praise and complain about, mined from review topics.

What buyers love

Pet Friendly27%

“Dog Loves It”

Quality-Overall11%

“The results have been consistent and reassuring, which speaks to the quality of the product”

Taste-Overall9%

“My dogs love the taste”

Allergies7%

“allergy free”

Soft Feel7%

“he is silky smooth”

Value For Money4%

“Good price”

Smell3%

“It smells so strongly”

Ease Of Use3%

“Easy to use”

Brightness/Shine/Glow3%

“From flay skin to fine shine”

Flavor3%

“my pets were practically doing happy dances around the kitchen because they love the taste so much”

What buyers complain about

Smell19%

“Gross smell”

Leak-Proof17%

“it leaks”

Allergies13%

“itching a lot”

Indigestion7%

“Tummy issues”

Value For Money5%

“much too expensive for my budget”

Taste-Overall4%

“Dislike taste”

Size-Overall3%

“this bottle is not large enough”

Functionality-Overall2%

“Not effective”

Ease Of Use2%

“Bottle pump very difficult to open”

Ease Of Cleaning2%

“Messy”

Top return reasons

Leak-Proof29%

Size-Overall19%

Product Condition15%

Value For Money12%

Taste-Overall8%

Functionality-Overall4%

Smell4%

Advertised Vs Actual Product4%

Quality-Overall4%

Defective Material/Parts2%

Common questions

Is fish oil for cats profitable to sell on Amazon United States?: The niche generates $1.4M/yr across 13 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is -7.5%. Flapen's verdict: Worth a look (54/100).
How competitive is the fish oil for cats niche?: 9 brands and 13 sellers compete. The top 5 products take 79% of clicks and top 5 brands hold 89% of demand.
What do buyers complain about in fish oil for cats?: Top complaints mined from reviews: Smell, Leak-Proof, Allergies. The return rate is 0.0%.
When does demand for fish oil for cats peak?: Demand peaks in May–Jun–Jul; the busiest month runs 3.6× the quietest.
What does it cost to enter the fish oil for cats niche?: Listings span $10.03–$35.34; the average listing price is $19.42 (sweet spot $15–$100). The average incumbent carries 21,290 reviews — the moat a new listing must climb.