Winter Polyculture of Channel Catfish and Rainbow Trout in Cages

Abstract Under winter conditions in Oklahoma (1.0–20.0°C; average, 7.0°C), polyculture of caged channel catfish (Ictalurus punctatus) and rainbow trout (Salmo gairdneri) resulted in a significantly higher channel catfish weight gain (about 6.5%; P < 0.05) than that observed in channel catfish monoculture (–3.8% gain). Channel catfish also experienced increased growth as a function of proximity to rainbow trout in neighboring cages.