In temperate climates, such as in Europe and South Africa, catfish are held indoors inside a greenhouse tunnel or warehouse, and the temperature maintained by means of electric heat pumps or boilers.
Eka maxelo lawa ya cinca cincaka, kufana nale Europe nalaha Afrika Dzong, catfish tihlayisiwa endzeni kati greenhouse tunnel kumbe e warehouse, kutani mahiselo ya tiyisisiwa hiku tirhisa tipompo to hisa ta gezi kumbe swovirisa mati.