Silver Perch

Food · Protein · Food, Typed Supps

A mild, easy fish that gives you vitamin D and omega-3 in one go.

Stage by stage

Intake (Chewing & digestion begins): Chewing and stomach acid start breaking down the fish’s protein and fat.
Stomach (Protein digestion starts): Stomach enzymes begin taking the fish protein apart.
Small intestine (Vitamin D & omega-3 absorbed): Bile helps absorb the fat-soluble vitamin D and omega-3 fats alongside the fish’s own fat.
Bone & tissues (Calcium uptake & cell repair): Vitamin D supports calcium absorption for bone, while omega-3 is built into cell membranes.

Timing

Any meal; the fish’s own fat carries its vitamin D and omega-3 for you.

Time to effect

Weeks: Vitamin D status and cell membrane omega-3 content both build 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

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

Environmental footprint

13.6 kg CO2e and 3691 litres of freshwater per kg, matched to "Fish (farmed)" in Poore & Nemecek (2018), Science 360.

Cost band

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

Key nutrients

Vitamin D
Omega-3
Complete protein
Vitamin B12

Nutrition per 100g

Calories: 220.8
Protein: 19.5g
Carbohydrate: 0g
of which sugars: 0g
Fat: 16g
of which saturated: 4.3g
Fibre: 0g
Sodium: 70mg

Food vs. supplement

A 100g serve of silver perch supplies roughly 250IU of vitamin D — a genuine contribution few whole foods make — plus close to 20g of protein and a full day’s B12, none of which a vitamin D tablet alone provides.

Kitchen tip

Pan-fry fillets 3 to 4 minutes a side or bake at 180C for about 15 minutes — the mild flesh takes marinades well.

Common myth

“Farmed freshwater fish don’t have real omega-3.” In reality: Aquacultured silver perch carries a genuine, measurable omega-3 content, driven by modern feed formulations used in Australian fish farming.