How many movies have Cuitláhuac Rodríguez and Ismael Rodríguez Jr. collaborated on?

They have worked on 7 movies together! Their first movie together was Unethical Behaviour (1970) while their highest rated movie together was Masacre en el río Tula (1985). They have not worked together since Obsession to Kill (1993). They are most known for their crime films together.