Purina floating catfish food is an excellent balance of nutrition coupled with strong growth characteristics. Catfish have no scales. All catfish, except members of Malapteruridae (electric catfish), possess a strong, hollow, bonified leading ray on their dorsal and pectoral fins, through which a stinging protein can be delivered if the fish is irritated. In members of the family Plotosidae, and of the genus Heteropneustes, this protein is so strong it can hospitalize humans unfortunate enough to receive a jab. In many catfish, these fins can be held open and locked in place after grabbing the catfish below the fins and carefully sliding the forefinger and thumb up along the belly to hold the fins open. It will take practice and caution before this technique can be applied on a regular basis. Purina floating catfish food is what catfish love to eat. People in turn, love to eat catfish, which have a sweet, mild flesh. Catfish are important as food fish throughout the world. Ictalurids are cultivated in North America (especially in the Deep South, with Mississippi being the largest domestic catfish producer). The fish, mostly channel catfish and blue catfish, are found in most waterways in the region. The fish is typically breaded with cornmeal and fried when served as people food. Catfish are easy to farm in warm climates, leading to inexpensive and safe food in local grocers. This has further increased its popularity in the U.S. as food. Purina floating catfish food is a highly nutritous floating ration formulated especially for catfish raised in pond culture. It is important when stocking, do not exceed 4,000 fish per acre.