Gemfish

Food · Protein · Food, Typed Supps

A softer, oilier fish with more vitamin A than most fish give you.

Stage by stage

Intake (Chewing): Chewing breaks down its soft protein and fat structure.
Stomach (Protein digestion begins): Stomach enzymes begin breaking down the fish protein.
Small intestine (Vitamin A & fats absorbed): Vitamin A, omega-3 fats and selenium are absorbed alongside dietary fat.
Bloodstream & tissues (Eye & immune support): Vitamin A supports the retina and immune function; omega-3s are built into cell membranes.

Timing

Any meal — the fat already in the fillet helps carry the vitamin A and omega-3 it supplies.

Time to effect

Weeks: Liver stores of vitamin A build up gradually with regular intake.

Allergens

Contains: Fish. Derived from what this food is, not from a product label.

Eating patterns

Fits: Pescatarian, Kosher, Keto, Gluten-free. Depends on the product: Halal, Low-FODMAP.

Satiety

189 on the satiety index, where white bread is 100 — high. Modelled from the Holt et al. (1995) measurements.

Cost band

Mid — roughly £11 per kg, as a band midpoint rather than a price.

Key nutrients

Vitamin A
Omega-3
Selenium
Vitamin B12

Nutrition per 100g

Calories: 80.1
Protein: 14g
Carbohydrate: 0.1g
of which sugars: 0.1g
Fat: 2.6g
of which saturated: 0.7g
Fibre: 0g
Sodium: 40mg

Food vs. supplement

A 100g serving supplies over 100mcg of preformed vitamin A alongside omega-3 and selenium — a whole-food dose that carries a wider safety margin than an isolated vitamin A capsule.

Kitchen tip

Its higher fat content makes it forgiving on the grill or in a pan — it doesn’t dry out as fast as leaner white fish.

Common myth

"Only liver and orange vegetables provide meaningful vitamin A." In reality: Gemfish’s flesh carries a genuinely notable amount of preformed vitamin A for a fish, alongside omega-3 and selenium.