1. Tilapia
Tilapia lacks a significant amount of healthy fatty acids, yet it contains harmful fat levels nearly comparable to pork fat. Overconsumption of this fish may lead to increased cholesterol levels and heightened sensitivity to allergens. Individuals with heart conditions, asthma, or allergies should avoid eating this type of fish.

2. Eel
Eels are high in fat, making them prone to absorbing industrial waste from water sources in farms. American eels are particularly known for containing the highest levels of toxins. European eels are also notorious for being heavily contaminated with mercury. Adults should limit their consumption to 300g per month, while children should not exceed 200g per month.

3. Basa Fish
Most of the basa fish available in stores are imported from Vietnam, specifically from the Mekong River, one of the most polluted water bodies globally. Additionally, basa fillets contain high levels of nitrofurazone and polyphosphates, which are known carcinogens.

4. Pangasius
This fish ranks highest in mercury contamination and is often illegally harvested, increasing the risk of food poisoning. Adult men should limit their intake to 100g per month, while adult women and children are advised to avoid it altogether.

5. Sea Bass
Sea bass contains a significant amount of mercury, especially when prepared as fillets. Occasionally, instead of consuming sea bass, you might opt for other safer and more affordable fish varieties. On average, adults should limit their intake to 200g per month, while children should not exceed 100g.

6. Oilfish
This fish, commonly known as oilfish, contains gempylotoxin—a waxy substance that the body cannot metabolize. While this toxin is not highly harmful, it can cause digestive discomfort. Therefore, individuals with digestive issues should avoid consuming it. To reduce gempylotoxin levels, the fish should be fried or grilled.
Source: BRIGHTSIDE

7. Catfish
Catfish can grow to a considerable size. To accelerate their growth, many fish farmers feed them hormones, especially those imported from Asian countries. Naturally raised catfish are less hazardous and more nutritious.

8. Mackerel
Mackerel contains mercury, which is not expelled but accumulates in the fish's body, leading to various health issues. Atlantic mackerel is the least dangerous in this regard, and you can consume it freely. Adults should limit their intake to 200g per month, while children should not exceed 100g.

9. Tuna
Tuna contains high levels of mercury, especially blackfin and bluefin tuna. Additionally, wild tuna is rarely found in stores, as most tuna comes from farms where they are raised with antibiotics and hormones.

