Born in New York in 1959, Fonseca grew up in a true artistic family. His father, Gonzalo Fonseca, was an eminent Latin American sculptor, and his mother was also an artist. Deeply tied to these roots, Fonseca left his formal education from Brown University after his freshman year to study painting in Barcelona, Spain, under the artist Augusto Torres. During this period, Fonseca devoted himself to studying figurative painting until he moved in 1983 to Pietrasanta, Italy, which immediately captured his heart. Caio stayed there until 1989, honing his distinct abstract style. After two years in Paris, France, Fonseca returned to Manhattan, New York. Since 1993, Fonseca splits his time between his two studios in Pietrasanta and downtown Manhattan