Boga

Boga (lat. Megaleporinus obtusidens) is a species of freshwater fish that inhabits the basins of Argentinian, Uruguayan, Paraguayan and Brazilian (where it's known as piapara) rivers, particularly the Paraná River, the Uruguay River, the São Francisco River and Río de la Plata.

It is gray fish with an emerald hue, with an elongated wide body and a small head. Boga can grow up to 70 centimeters (28 inches) and weigh up to 5 kilograms (11 pounds), but the size greatly depends on the habitat and its omnivorous feeding habits.