# Denmark's Aerbio Says CO2-Derived Protein Beats Fishmeal Nutrition by 25%, Salmon Trial Feed Conversion Ratio Falls to 1.01–1.10 Over 56 Days

> Danish company Aerbio says its microbial protein Proton, made by fermenting CO2 and hydrogen, outperformed high-quality fishmeal in a salmon trial. The company reports a feed conversion ratio of 1.01–1.10 over 56 days versus 1.50 in the control group, and says Proton has about 95% protein digestibility in salmon.

- Date: 2026-11-13 · published 2026-11-13T21:06:25.641Z
- Category: market · region Global · magnitude low
- Page: https://feedsoft.ai/events/98415-denmark-s-aerbio-says-co2-derived-protein-beats-fishmeal-nutrition-by-25-salmon
- Commodities: [Fishmeal](https://feedsoft.ai/c/FISHMEAL.md), [Soybean Meal](https://feedsoft.ai/c/SBM.md)

## Why it matters

A credible fishmeal substitute would add supply for aquafeed protein and could pressure fishmeal demand over time. The claims are company-reported and the product is positioned as a complement rather than a replacement, so the near-term price impact is limited.

## Read by commodity

- SBM: neutral
- FISHMEAL: bearish ▼

## Sources

- theseafoodintelligence.com: https://www.theseafoodintelligence.com/en/news/aerbio25-561-011-10-221f13

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Data from Feedsoft AI (https://feedsoft.ai/). For information only; not investment advice.