We present the first data on the life history traits and growth patterns of Boana riojana from 35 individuals belonging to two populations in central Argentina. We determined age using skeletochronology and analyzed morphometric variables in relation to these ages. The mean snout-vent length of sexually mature males was 53.7 mm, with an average age of 2.4 years. The species had a maximum longevity of four years, and the minimum age at sexual maturity was two years, which was consistent across both populations. Body size and age showed a positive correlation. The von Bertalanffy growth equation revealed an asymptotic snout-vent length of 59.7 mm and a growth coefficient of 0.87. Additionally, a decline in growth rate was observed from the second to the third year of age. We found no significant differences in the variables between both populations. In conclusion, determining the individual age of different populations of B. riojana has, for the first time, allowed us to establish the life history traits of the species.