Developed after extensive study and analysis of the sense of sight, smell and taste of numerous carnivorous fish. The inclusion of key ingredients like dl-methionine and lysine allowed us to produce a food most top feeding carnivorous fish are eager to devour. New advances in bio-technology helped us identify the highest grade of carotenoid available today which promotes active colour development and retention in UV deficient environments. Your fish will look their best year-round! mended- Hikari tropical food sticks as a daily diet for all types of Arowana and other top feeding carnivorous fish normally fed live foods