I.
● 24G Protein · 200 ml
Salmon, Hot Honey
Sweet heat. Slow burn.
Wild salmon, hot honey, sea salt.
24–25GComplete protein, per carton
5Real ingredients, nothing else
0BPA · tin · liner · preservatives
200MLPeel & perform · 6.8 fl oz
Nutrition in development. Final values subject to lab verification.
§01
The Lineup
The Lineup
Three cartons. One discipline.
II.
● 25G Protein · 200 ml
Sardines, Lemon
Bright. Clean. Mediterranean.
Wild sardines, cold-pressed EVOO, lemon.
III.
● 24G Protein · 200 ml
Ahi, Chili Crisp
Restless. Loud. Loaded.
Wild ahi tuna, chili crisp, sea salt.
§02
Manifesto
Manifesto
Bars are candy. Powder is a workaround. Cans are last century. STRONGFISH is wild protein, built from the ocean up.
§03
Why The Carton
Why The Carton
The fish was never the problem.
The can was.
Steel cans rely on an epoxy liner to keep the metal from reacting with food. Most of those liners — including the ones marked "BPA-free" — leach endocrine-disrupting bisphenols into fish, especially acidic and oil-packed fish.
STRONGFISH skips the metal entirely. A retort-sterilized paperboard carton keeps the fish shelf-stable for years with no liner, no opener, no aftertaste. Just protein, EVOO, and sea salt — sealed clean.
- No BPA
- No Can Liner
- No Preservatives
- No Artificial Flavors
- No Fillers
- No Gluten
§04
Side By Side
Side By Side
The honest comparison.
| Metric | STRONGFISH | Canned Fish | Protein Bars | Whey |
|---|---|---|---|---|
| Protein per serving | 24–25g | 15–22g | 10–20g | 20–25g |
| Ingredients | Fish, EVOO, salt | Fish, oil, additives | 20+ items | Isolate, sweeteners |
| Packaging | BPA-free carton | BPA/BPS-lined steel | Plastic film | Plastic tub |
| BPA / BPS exposure | None | Yes | Trace | Trace |
| Mercury risk | Low | Variable | — | — |
| Real food | Yes | Yes | No | No |
— Founders · Father & Son
Built By People
Who Eat It.
STRONGFISH started in a kitchen after a conversation that has happened in a thousand kitchens: the fish is great — what is the can for?
A year of R&D, supplier visits, and shelf tests later, we replaced the steel can with a BPA-free carton, kept the wild-caught fish, and shipped it. We're building the protein brand we wanted to eat — clean, loud, and honest about what's inside.
Co-Founder · Brand, Product, Growth
Aiden Holstein
Aiden grew up inside CPG. His family's brand, Twisted Alchemy, sits on shelves at Whole Foods, Sprouts, Ritz-Carlton, and Nobu, and he's worked every side of it — sales, ops, customer. He leads brand, product, and growth at STRONGFISH, where the obsession with what goes into your body meets the obsession with how it shows up on shelf.
Co-Founder · Supply, Ops, Playbook
Scott Holstein
Scott is a 25-year CPG operator. He founded and exited Kim and Scott's Gourmet Pretzels, scaling it to 20,000+ points of distribution, and co-founded Twisted Alchemy. At STRONGFISH he runs supply, operations, and the playbook he's spent two decades writing — how a small brand earns shelf, trust, and durability against the incumbents.
— What We're Building
The post-tin era of fish protein. Wild-caught, cold-pressed EVOO, sea salt. Sealed in a BPA-free carton — not a 100-year-old metal can.
— Why It Matters
24–25g of complete protein, no plastic-lined lids, no compromise on taste. Built for athletes, home cooks, and anyone who reads a label.
— Where We're Headed
Three SKUs at launch. A founders batch in October 2026. Then the long, patient work of earning shelf — one carton at a time.
§05 — Questions
Frequently asked.
Canned sardines themselves are nutritious — wild-caught, high in protein, and rich in omega-3s. The concern is the can. Most steel cans use an epoxy liner that historically contained BPA, and even "BPA-free" liners often swap in BPS or BPF — chemicals with similar endocrine-disrupting profiles. Acidic ingredients like lemon and tomato accelerate leaching. The fish is fine. The packaging is the problem.
Per STRONGFISH carton: wild salmon delivers 24g of complete protein, wild sardines deliver 25g, and wild tuna delivers 24g. All three contain every essential amino acid in the ratios your body needs to repair muscle. Tuna is leanest, sardines bring the most omega-3 per gram, and salmon sits in the middle on both axes.
Bisphenol A is an endocrine disruptor — it mimics estrogen and has been linked to hormonal, reproductive, and metabolic effects in peer-reviewed studies. It leaches from can liners into food, especially fatty or acidic foods like fish in oil or tomato sauce. "BPA-free" cans usually substitute BPS or BPF, which behave similarly. The cleanest solution is to skip the metal liner entirely.
Tetra Recart cartons are paperboard-based, retort-sterilized packages with no metal can liner. They keep food shelf-stable for years without BPA, BPS, or epoxy coatings. They use roughly two-thirds less raw material than steel cans, ship flat (lower carbon footprint), and tear open by hand — no opener, no sharp lid.
Yes. STRONGFISH cartons are accepted in carton recycling programs across most of the US and Europe. The paperboard layer is recovered and pulped into new paper products. Rinse the empty carton, flatten it, and toss it in your curbside bin where carton recycling is available.
For protein content alone, the difference is small — both are complete proteins. Where wild pulls ahead is the surrounding nutrition: a leaner fat profile, higher omega-3-to-omega-6 ratio, no antibiotic exposure, and no fishmeal feed. Wild-caught salmon, sardines, and tuna also carry fewer contaminants from feed-pellet aquaculture systems.
Both are complete proteins with a full amino acid profile. Whey is faster-absorbing and convenient post-workout. Fish protein digests slower, comes with omega-3s and micronutrients (B12, selenium, vitamin D), and arrives as actual food — not a powdered isolate. For most athletes the smarter answer is both: whey when speed matters, real fish for everything else.
§06
Waitlist
Waitlist
Get first
access.
Sign up and you'll be first in line when STRONGFISH drops — before the public, before the press.
Launching 10 · 2026
Built from the ocean up.
Built from the ocean up.