1. Broodstock management – choosing healthy, mature male and female catfish with good genetic traits (fast growth, disease resistance). 2. Induced spawning – hormones are often used to stimulate ovulation and spermiation because many cultured catfish do not spawn naturally in captivit

1. Matthiola incana is a species of flowering plant in the cabbage family Brassicaceae. Common names include Brompton stock, common stock, hoary stock, ten-week stock, and gilly-flower. The common name stock usually refers to this species, though it may also be applied to the whole genus Matthiola.