Sera Catfish Chips, 3.3 oz, are a staple food consisting of carefully manufactured Chips for rasping and suckermouth bottom fish such as Ancistrus and plecos. The balanced composition with a high amount of ballast substances (from willow bark fibers and alder cones, among others) supports healthy digestion and development. The chips sink quickly and become smooth in water but keep their shape for at least 24 hours, and thus allow the mainly nocturnal catfish eating slowly, which meets their natural feeding habits, without polluting the water.