Here is my best list of Zoos and Aquariums in Brazil:

Parque Nacional Iguazu
Santos Municipal Aquarium
Represa Bortolan
Municipal Park of the "Cachoeira das Andorinhas"
State Park of Itacolomi

Rio Preto Zoo
Sargento Prata Zoo
Aquario Natural
Abismo Anhumas
Aclimacao Park