What Is Fish Collagen?

Post by Troy Parkinson

Jun 18 2026

What Is Fish Collagen?

Fish collagen, also known as marine collagen, is a type of collagen protein derived from the skin, scales, and bones of fish. It is one of the most bioavailable forms of collagen available, meaning the body can absorb and utilise it more efficiently than collagen from other animal sources.

Collagen is the most abundant protein in the human body, forming the structural foundation of skin, hair, nails, joints, tendons, and bones. Fish collagen is predominantly Type I collagen — the same type that makes up the majority of our skin and connective tissue.

Why Fish Collagen?

Compared to bovine (beef) or porcine (pork) collagen, fish collagen has a smaller molecular size, which allows it to be absorbed into the bloodstream more rapidly and efficiently. This makes it a preferred choice for those seeking targeted skin and joint support.

Fish collagen is also a suitable option for those who avoid red meat or pork for dietary, cultural, or religious reasons.

Nutritional Profile

Fish collagen is rich in the amino acids that support collagen synthesis in the body, particularly:

Glycine — supports collagen structure and gut health
Proline — essential for collagen formation and skin elasticity
Hydroxyproline — unique to collagen, supports structural integrity

Benefits of Fish Collagen Supplementation

Supports skin elasticity, hydration, and a youthful appearance
May help maintain joint comfort and flexibility
Supports hair and nail strength
Highly bioavailable — absorbed faster than other collagen types
Pairs well with hyaluronic acid and vitamin C for enhanced results

How to Take Fish Collagen

Fish collagen is available in capsule or powder form. Capsules are convenient for daily use, while powder can be stirred into warm drinks, smoothies, or soups. For best results, take consistently and pair with vitamin C, which is essential for the body's own collagen synthesis.

Sustainability Note

When choosing a fish collagen supplement, look for products sourced from sustainably caught or farmed fish. Responsible sourcing ensures both product quality and environmental integrity.