Pogonopoma obscurum

Pogonopoma obscurum is a species of armored catfish endemic to Brazil where it occurs in the upper reaches of the Uruguay River, in the states of Rio Grande do Sul and Santa Catarina, southern Brazil. This species is fairly common and inhabits stretches of the main river and its tributaries, with relatively rapid water currents over bottoms usually formed by rocks and boulders. This species grows to a length of 25 cm SL.