Baked fish protein averages 20–26 g per 100 g, and a 4-oz cooked portion yields about 23–28 g depending on the fish.
Cooking fish in the oven concentrates protein by driving off water while keeping structure tender. You get steady grams per bite with clean flavor, simple cleanup, and a method that suits most fillets. Below you’ll find clear numbers and kitchen tips that make baked fish a reliable protein anchor. That keeps meals simple nightly.
Baked Fish Protein By Species And Portion
This section gives you the numbers you came for. Values use cooked, dry-heat data that aligns with standard oven baking. Protein varies by species, fat level, and moisture after cooking. Use the table to compare at a glance, then see the portion math later.
| Fish (Cooked, Dry Heat) | Protein (per 100 g) | Notes |
|---|---|---|
| Atlantic Salmon (Farmed) | ~22 g | Oily, omega-3 rich; dense texture |
| Atlantic Cod | ~23 g | Lean, flaky; mild taste |
| Tilapia | ~26 g | Lean, fast-cooking |
| Bluefin/Yellowfin Tuna* | ~27–30 g | Firm; meaty bite |
| Trout | ~23 g | Moderate fat; delicate |
| Haddock | ~24 g | Lean; subtle sweetness |
| Halibut | ~22–23 g | Firm; large flakes |
| Sardines (boned, fillets) | ~25 g | Rich flavor; small fillets |
| Catfish | ~18–20 g | Mild; softer texture |
*Species and cut matter. Yellowfin and bluefin run higher per 100 g than many white fish, while fattier salmon sits slightly lower per 100 g because of water and fat balance after baking.
How Much Baked Fish Protein Do You Get Per Meal?
Most adults eyeball portions in ounces, not grams. Labels and federal guidance use a 4-oz raw reference, which bakes down to a smaller cooked weight. In practice, your baked fillet lands near 3–4 oz cooked on the plate. The second table later in this guide turns that into reliable grams of protein by species.
Why Baking Keeps Protein Reliable
Oven heat denatures protein so the fillet firms up and sheds moisture. Per-100-gram values rise compared with raw because weight drops. The grams of protein you ate don’t vanish; they concentrate in a smaller piece. That shift explains why labels and trackers sometimes disagree; they’re weighing different end points.
Quick Math For Portions
Need an estimate without a scale? Use two rules of thumb.
Rule 1: 7–8 Grams Per Ounce Cooked
Most baked fish sits near 7–8 g protein per ounce cooked. A tidy 3-oz serving lands near 21–24 g. A hearty 6-oz plate hits roughly 42–48 g.
Rule 2: Palm-Sized Fillet
A palm-sized fillet usually weighs about 4 oz cooked. On common species, that gives you 25–32 g of protein. Use the species table up top to shade the estimate high or low.
Choosing Species For Your Goal
If You Want Maximum Protein Per Bite
Pick tuna or firm white fish like tilapia or haddock. Per 100 g, they trend toward the higher end. They also excel in meal prep because slices reheat cleanly.
If You Want Omega-3s With Plenty Of Protein
Pick salmon or trout. They bring solid protein plus long-chain omega-3s.
If You Want Gentle Flavor For Kids
Pick cod or halibut. Flake is tender and mild, so sauces and crumbs shine without masking the fish.
How To Bake Fish For Steady Protein
Prep
- Pat fillets dry for even browning and less steam.
- Lightly oil or spray to prevent sticking.
- Salt early; pepper and herbs just before the oven.
Temperature And Time
- Set the oven to 400–425°F (205–220°C) for most fillets 1–1½ inches thick.
- Bake 10–15 minutes, or until the thickest point flakes easily and reaches 145°F (63°C) internally.
- Rest 2–3 minutes so juices settle and bites stay moist.
Doneness Cues
- Surface turns opaque and just begins to brown at the edges.
- Center turns from glossy to satin and flakes with gentle pressure.
- Thermometer reads 145°F (63°C) in the thickest part.
Seasoning Ideas That Pair With Protein Goals
Lemon-Garlic Sheet Pan
Toss broccoli or asparagus on the pan so dinner brings protein and fiber together. Finish with lemon zest for brightness.
Herb-Mustard Crust
Mix Dijon, chopped parsley, and panko. Spread thinly on cod or halibut. You lock in moisture and add a crisp top with minimal fat.
Smoky Paprika Rub
Blend sweet paprika, onion powder, and a pinch of cayenne. Great on salmon; it adds color and a savory edge.
How “Baked” Compares With Other Methods
Air-frying and broiling run hotter and shorter. Pan-searing cooks fast with direct contact. Poaching adds water and cools the surface. Total protein per fillet stays about the same; moisture and weight shift. That’s why per-100-gram numbers move across methods even with the same starting fillet.
Smart Shopping For Protein-Dense Fillets
- Choose even thickness so pieces cook at the same rate and retain moisture more predictably.
- Seek out firm fillets without gaps or weeping liquid; gaps signal prior freeze-thaw or rough handling.
- Buy by weight, not only by piece count. Larger gaps and heavy glaze change cooked yield.
Storage And Meal Prep Notes
Cook extra fillets and chill quickly. Store in shallow containers so steam doesn’t pool. Reheat gently, just to warm through. Protein stays the same; overcooking only drives out more water and makes bites dry. Aim for two reheats within three days, or freeze portions for two months.
Protein By Portion Size (Cooked, Dry Heat)
Use this late-stage table when planning meals for the week. It reflects cooked weights you serve, not raw package weight.
| Fish (Cooked) | ~3 oz Cooked | ~4 oz Cooked |
|---|---|---|
| Atlantic Salmon | ~19–21 g | ~25–28 g |
| Atlantic Cod | ~20–22 g | ~27–30 g |
| Tilapia | ~22–24 g | ~29–31 g |
| Tuna (yellowfin/bluefin) | ~24–27 g | ~32–36 g |
| Trout | ~20–22 g | ~27–30 g |
| Haddock | ~21–23 g | ~28–31 g |
| Halibut | ~19–21 g | ~25–28 g |
Portion Planning With Sides
Set your plate around protein, vegetables, and a starch. Start with 3–4 oz cooked fish for the protein slot. Add a roasted green and a roasted starch on the same tray to save time. Lemon wedges and a herb yogurt sauce boost flavor. On training days, go with 5–6 oz cooked fish and a larger starch. On lighter days, keep the fillet at 3 oz and fill space with greens or a baked potato.
How This Article Calculates Protein
Numbers reflect cooked, dry-heat data, which mirrors oven baking. Protein per 100 g for salmon sits near 22 g; cod near 23 g; tilapia near 26 g; tuna near 29–30 g. Portion estimates scale those numbers to 3–4 oz cooked weights that match what lands on the plate.
Daily Protein Targets And Baked Fish
A simple baseline is 0.8 g protein per kilogram of body weight per day. Many active adults aim higher. Split intake across meals so baked fish at dinner isn’t doing all the work. A palm-sized fillet gives a solid chunk of your day’s protein without crowding carbs or veggies off the plate. Baked Fish Protein makes it easy to hit targets while keeping meals light and quick.
Quick Takeaways For Busy Cooks
Baked Fish Protein is steady, predictable, and easy to plan. Pick a species you enjoy, bake to just-done, and portion by appetite. With the numbers above, you can hit targets without guesswork.
For deeper nutrient detail on cooked salmon, see the cooked salmon data used by dietitians. For serving size conventions used by labels and federal advice, see the 4-oz serving reference….