Polish market embraces sea bass while facing butterfish health warnings

Labraks, known internationally as sea bass, is gaining popularity in Polish supermarkets. The lean fish is highlighted for its high omega‑3 fatty acids, full‑protein content and B‑vitamins that support brain function, muscle growth and cardiovascular health. Culinary advice recommends baking, grilling or steaming the whole fish with fresh herbs, garlic, olive oil and lemon, avoiding heavy sauces that could mask its delicate flavor.

In contrast, butterfish varieties such as eskolar (Lepidocybium flavobrunneum) and kostropak (Ruvettus pretiosus) contain more than 20% fat and wax‑ester compounds that are poorly digested, leading to diarrhea, nausea and abdominal pain. Because of these effects, Italy and Japan have restricted their sale, and health officials advise pregnant women, the elderly and those with sensitive digestion to avoid them. Despite the warnings, butterfish continue to be imported to Poland and enjoy growing consumer interest.

Both fish types are promoted for their nutritional value, but Polish consumers are urged to consider the differing health profiles: sea bass for its brain‑boosting benefits and butterfish for potential gastrointestinal risks.