Fish Science Large Carnivore Diet 285g Sinking Pellets for Oscars & Catfish

The FS Large Carnivore Diet is a 4.5mm sinking pellet food formulated for large carnivorous freshwater fish — oscars, rays, catfish, and similar species that thrive on a protein-rich, insect-based diet. Rather than relying on generic fishmeal, this diet is built around ingredients that closely reflect what these fish would encounter in the wild.

What's in the formula

The ingredient list centres on mealworm meal, earthworm flour, and herring meal — a combination that delivers both the protein profile and palatability that large carnivores respond to. Dried brewer's yeast, salmon oil, and whole wheat round out the base, while dried apple, dried seaweed, and kelp contribute additional nutritional variety.

Colour enhancement

Natural colour-enhancing ingredients are included in the formula, specifically spirulina powder and kelp. These work with the fish's physiology rather than relying on synthetic pigments, supporting vibrant colouration over time.

Immune system support

The diet is fortified with garlic flour, beta glucans, and polyphenols to support immune function — a meaningful addition for large, long-lived species where health maintenance matters as much as growth.

Nutritional analysis

• Protein: 43%
• Oil: 11%
• Fibre: 3.5%
• Moisture: 5%
• Ash: 9%
• Vitamins A, D3, E, and C added, alongside L-lysine, DL-methionine, tocopherol, and rosemary
• Pellet size: 4.5mm sinking

Feeding guidance

Feed two to three times daily, offering only what your fish will consume within one minute. Remove any uneaten food promptly to maintain water quality.

With a high protein content, natural immune support, and ingredients matched to the biology of large carnivorous fish, this is a considered daily diet for keepers who take their fish's long-term health seriously.