Ictalurids are cultivated in
North America, especially in the
Deep South, with
Mississippi being the largest domestic catfish producer.
Channel catfish (
Ictalurus punctatus) supported a $450 million/yr
aquaculture industry in 2003. The US farm-raised catfish industry began in the early 1960s in
Kansas,
Oklahoma and
Arkansas. Channel catfish quickly became the major catfish grown, as it was hardy and easily
spawned in earthen
ponds. By the late 1960s, the industry moved into the
Mississippi Delta as farmers struggled with sagging profits in
cotton,
rice and
soybeans, especially on those farm areas where soils had a very high
clay content. The
Mississippi Delta became the industry home for the catfish industry, as they had the soils, climate and shallow
aquifers to provide water for the earthen ponds that grow of catfish annually. Catfish are fed a grain-based diet that includes
soybean meal. Fish are fed daily through the summer, at rates of 1–6% of body weight with pelleted floating feed. Catfish need about two pounds of feed to produce one pound of live weight. Mississippi is home to of catfish ponds, the largest of any state. Other states important in growing catfish include
Alabama,
Arkansas and
Louisiana. ==Aquarium==