Specifically, Leptolebias species have been found in two regions to date: between Maricá and Vila de Cava in Rio de Janeiro state, and between Itanhaém in southern São Paulo state and the Paranaguá bay catchment area in Paraná state.
On January 27, 1951, according to law n.613, Matinhos became a district belonging to Paranaguá, and on June 12, 1967, it officially became a town unattaching itself from Paranaguá.
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In August 1931 the region received a visit from the governor of Paraná, Carlos Cavalcanti, who went from Paranaguá to Caiobá in a waggon.