★ Brachyplatystoma vaillantii
Brachyplatystoma vaillantii, the Laulao catfish or pyramuta, is a species of catfish in the family Pimelodidae, found in the Amazon and Orinoco river basins, as well as major rivers of Guiana and northeastern Brazil.
1. Description. (Описание)
It grows to a length of 150 cm. The back is dark to light gray or brown, without spots or stripes. The ventrum is much paler to give a striking countershading.
They are fully piscivorous, preying on loricariids and other bottom-dwelling fish.
2. Ecology. (Экология)
It is found in both freshwater and brackish water systems. This is a bottom-dwelling potamodromous fish, usually found in muddy waters and deeper, flowing channels. Juveniles and sub-adults migrate.
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