The catfish has an elongated body section round the front portion, the more compressed laterally instead in the back, head very large and flattened with a wide mouth fitted with conical teeth and 4 pairs of barbigli: a few very long at the side of the mouth, 2 pairs in the lower jaw and another pair at the nasal holes. The first ray of dorsal fin and two pectoral is sharp, free of skin flakes, gray-black-brown on its back and yellow-white ivory-on belly.

Many of these fish will eat the waste found on the bottom of their habitat, they eat other fish or vegetables as a fund that scraping moss from the rocks with their

teeth. Some species of large size are voracious hunters to swallow large prey in a coup. One example is the torpedo that raagginge European and more than 3m in length, in addition to eating fish also feeds on aquatic birds.

It reaches sexual maturity within 2 years of life, mating occurs during the months of March, April until June, the courtship is strong among the tested male and female, is it to dig the hole intended to eggs but it is up both store up to hatching, which occurs after a dozen days. spawns in the months of June-July temperature of 18-20 ° C.