The correlation between the latitude where denser concentrations of the croaker (Micropogon furnieri) occurred and the month of the year were established in this paper. The unit effort production (kg/hour haul) was used as the concentration index and the hauls made within 30' were grouped in the immediate superior latitude. The croaker migrates along the Brazilian coast between 28º S and 33º S, according to the expression: y = 30.6 + 1.85 cos 30 (x - 2), where: y = latitude (ºS) x = 1, 2 .... 12 (months of the year)
