Best Vitamin B2 (Riboflavin)-Rich Foods for Freshwater Fishs

Ranked by vitamin b2 (riboflavin) content among foods safe for freshwater fishs in the Creature Feast catalog.

Spirulina flakes per 100g: ~3.7mg riboflavin Spirulina flakes are exceptionally rich in riboflavin (B2), providing a concentrated dose that supports energy metabolism and the enzymatic reactions that keep fish cells functioning normally. Riboflavin also plays a role in maintaining the mucus coat that protects fish from pathogens.

Bloodworms per 100g freeze-dried: ~0.3mg riboflavin Bloodworms provide riboflavin as part of their insect-origin nutrient profile. The B2 content supports the electron transport chain in fish mitochondria, helping produce the ATP energy needed for constant swimming activity.

Spinach per 100g blanched: ~0.2mg riboflavin Blanched spinach contains meaningful riboflavin alongside other B vitamins. For herbivorous species that regularly accept greens, spinach contributes B2 to support metabolic enzyme function. Limit to once weekly due to oxalate content.

Mysis shrimp per 100g frozen: ~0.15mg riboflavin Mysis shrimp provide riboflavin as a natural component of their crustacean tissues. The B2 is packaged with protein and fat, ensuring it reaches the fish's digestive system in a bioavailable form.