Eel

Eels are elongated, snake-like fish belonging to the order Anguilliformes. The most commonly farmed species are the European eel (Anguilla anguilla), Japanese eel (Anguilla japonica), and American eel (Anguilla rostrata). These species are catadromous, meaning they migrate from freshwater to the ocean to spawn. Due to challenges in breeding eels in captivity, most farmed eels are grown from wild-caught juveniles (glass eels).

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Learn more about Eel

  • High-Protein Diet: Eels require a protein-rich diet (45-55%) for optimal growth. Fish meal and fish oil have traditionally been the main protein sources, though plant-based alternatives are being explored.

  • Fat Content: Eels need 10-25% fat in their diet to support energy demands and maintain flesh quality.

  • Essential Nutrients: Vitamins (A, D, and B-complex) and minerals (phosphorus, calcium, and selenium) are crucial for healthy development.

  • Live Feed in Early Stages: Young eels (glass eels) often require live or fresh feed before transitioning to formulated pellets.

  • Pond Culture: Traditional pond farming is used in some regions, where eels are stocked in freshwater or brackish ponds and fed formulated diets.

  • Recirculating Aquaculture Systems (RAS): RAS provides a controlled, bio-secure environment, optimizing growth and reducing environmental impact. This system is becoming more popular due to sustainability concerns.

  • Tank-Based Systems: Eels are also raised in tanks with controlled water flow, aeration, and filtration to maximize efficiency.

  • Wild Glass Eel Collection and Grow-Out: Since eels are difficult to breed in captivity, most farming operations rely on catching wild glass eels and growing them to market size in aquaculture systems.

  • High in Omega-3 and Healthy Fats: Eel is rich in heart-healthy omega-3 fatty acids, promoting cardiovascular and brain health.

  • Excellent Protein Source: With a high protein content, eel supports muscle growth and repair.

  • Rich in Vitamins and Minerals: Eel is a great source of vitamin A, B12, and D, which support immune function, vision, and bone health.

  • Delicate Flavor and Culinary Value: Eel is prized in cuisines worldwide, particularly in Japanese (unagi and anago), Chinese, and European dishes, and is often grilled, smoked, or used in sushi.