Know2eat

Greenland halibut

Reinhardtius hippoglossoides

What greenland halibut has been studied for

2 associations assessed — 2 with at least some human evidence behind them. Strongest first.

  • 1 Moderate
  • 1 Limited
3 things to know first — allergies, interactions and intake limits

About greenland halibut

A deep, cold-water flatfish caught in the North Atlantic and Arctic. Unlike the lean Atlantic and Pacific halibuts it is a genuinely fatty fish, with soft, high-oil flesh that suits smoking and poaching.

Also known as Turbot (Canada), Black halibut, Blue halibut, Newfoundland turbot

Muscle & Physical PerformanceHeart Health

The evidence in depth

Best supported: Moderate

What each association actually rests on, and the papers behind it. A rating describes the state of the research, not how impressive the food is. How we rate evidence.

Muscle protein synthesis

Muscle & Physical Performance
Moderate evidence

May support muscle protein synthesis as a complete protein. This rests on the protein quality of fish generally, which is well characterised, rather than on any study of this species.

Moderate evidence. Several human studies point the same way, with real caveats.

1 source

Deep research mode adds each paper’s own conclusion and stated limitations.

Blood lipid profile

Heart Health
Limited evidence

Has been studied as part of the oily fish category for effects on blood triglycerides. Greenland halibut itself has not been the subject of feeding trials; what carries over is the general finding that oily fish intake lowers fasting triglycerides.

Limited evidence. Early human work, or mostly lab and animal research.

2 sources

Deep research mode adds each paper’s own conclusion and stated limitations.

Ask about Greenland halibut

Ask about Greenland halibut

Answers are written only from the entries on this page — the same nutrients, compounds, claims and citations you can read above. Nothing is added from outside the database, and every answer lists what it was built from.

AI explanations are not switched on for this site, so there is nothing to ask here. Everything above is read straight from the database and does not need them.

Key nutrients

Nutrient content per 100 grams
NutrientAmount% DV
Macronutrients
Calories186 kcal9%
Protein14.4 g29%
Total fat13.8 g18%
Carbohydrate0 g0%
Fibre0 g0%
Total sugars0 g—
Water70.3 g—
Fats
Saturated fat2.42 g12%
Monounsaturated fat8.38 g—
Polyunsaturated fat1.37 g—
Cholesterol46 mg15%
EPA (omega-3)0.526 g—
DHA (omega-3)0.393 g—
DPA (omega-3)0.089 g—
Linoleic acid (omega-6)0.123 g—
Vitamins
Vitamin A14 µg2%
Vitamin C0 mg0%
Vitamin D27.4 µg137%
Vitamin E0.73 mg5%
Vitamin K0.1 µg0%
Thiamin (B1)0.06 mg5%
Riboflavin (B2)0.08 mg6%
Niacin (B3)1.5 mg9%
Pantothenic acid (B5)0.25 mg5%
Vitamin B60.42 mg25%
Folate1 µg0%
Vitamin B121 µg42%
Choline61.8 mg11%
Minerals
Calcium3 mg0%
Iron0.66 mg4%
Magnesium26 mg6%
Phosphorus164 mg13%
Potassium268 mg6%
Sodium80 mg3%
Zinc0.4 mg4%
Copper0.03 mg3%
Manganese0.012 mg1%
Selenium36.5 µg66%
Other measured compounds
Beta-carotene0 µg—
Alpha-carotene0 µg—
Lycopene0 µg—
Lutein + zeaxanthin0 µg—
Caffeine0 mg—
Ash1 g—

Nutrient values are per 100 g of the USDA reference entry named on this page and vary with variety, growing conditions, storage and preparation.

Source record: Fish, halibut, Greenland, raw (USDA FoodData Central, FDC ID 171965).

% DV uses the FDA Daily Values for adults and children aged 4 and over. A dash means no Daily Value has been established for that nutrient.

Bioactive compounds

Compounds present in meaningful amounts. Presence is banded rather than quantified, because whole-food levels vary enormously with variety, growing conditions, storage and preparation.

How preparation changes things

Only effects with real support are listed. If a preparation method is missing, it is because nothing dependable is documented — not because it makes no difference.

Nothing dependable is recorded about how preparation changes this food’s nutritional properties. Rather than guess, this section stays empty.

Things to know

Allergies, interactions and intake concerns. Every food gets this section — a reference where everything is uniformly good is not a reference.

  • Allergy

    Fish allergy

    Flatfish share the parvalbumin allergen family with other finfish, and cross-reactivity between species is common.

  • Worth knowing

    Mercury in a long-lived deep-water fish

    Greenland halibut is slow-growing and long-lived, and sits above smaller fish in the food chain, so it accumulates more methylmercury than short-lived species. It is not on the FDA and EPA list of fish to avoid, but it is a species where the advice to vary the fish you eat matters.

  • Worth knowing

    Oil content and digestive upset

    The very high oil content of this species can cause loose stools in some people when eaten in large portions, particularly when smoked and eaten cold.