Credit for the video: Ismael Radwan (Egypt)
Description: Abdel Rahman El Gamal (Founder of the website and the video channel)
The video was taken in a catfish farm in Benin. The high density of catfish is reflected in the dark cloud of fishing moving in the tank. Often, the African catfish (Clarias gariepinus) is raised in high density. This is based on their outstanding tolerance to the farming conditions. However, optimum farming environment must be secured. If one watches closely the vigorous feeding activity, quite a few specimens of much smaller size than the average do exist. If these fish comes from one batch or of the same age, the small size could be magnified by the competition for feed and/or for space. If those fish are much younger, periodic grading is essential to avoid the cannibalism which is a common phenomenon in small fingerlings.