As shown in the picture , it should be Southwest Atlantic butterfish Scientific name

Pomfretidae ? Stromateidae ? Stromateidae ? Stromateus fish

The picture below is Brazilian true pomfret Stromateus brasiliensis, commonly known as snow pomfret, spotted pomfret, flower pomfret

Distributed in the Southwest Atlantic, from Brazil to Argentina Tierra del Fuego, habitat depth 22-133 meters, the fish body back blue or green, white abdomen, the side of the body with a number of dark blue round spots, dorsal fin cartilage 47 This fish has a blue or green dorsum, white belly, and many dark blue spots on the side of the body. It has 47-56 dorsal fin cartilages, 40-48 anal fin cartilages, and a body length of up to 38 centimeters, and inhabits the middle and upper bottom waters.