The lake is known for the large wels catfishes. It is believed that the depths of the lake are inhabited by the gigantic catfishes, up to 3 m (9.8 ft) long with the weight of over 100 kg (220 lb). Such a large specimens have not been caught yet and in July 2017 a divers were employed to explore the part of the lake. The waters of the lake are murky and at the depths of 5 to 6 m (16 to 20 ft), the visibility is zero. The divers reached 15 m (49 ft), but didn't discover such a large fishes, though few days before the dive, a specimen 1.86 m (6 ft 1 in) long which weighted 37 kg (82 lb) have been caught near the mouth of the Boranja river. Since 1998, an annual catfish hunt festivity Somovijada, has been held. The heaviest fish caught in the lake measured 87 kg (192 lb).