Besides the observation of tadpoles in mid-May, no direct observation of breeding has been made. The dissection of a dead L. nigriventer female that had been overrun by a tractor in mid-January revealed several hundred greyish-black oocytes with a diameter between 1.5–2 mm. From the available data and phylogenetic relatedness it can be hypothesised that at least some aspects of the reproduction are similar to Discoglossus, which are opportunistic breeders with a short and intense inguinal amplexus during which several batches of eggs are deposited and adhere to stones, aquatic plants or the bottom of the water body. According to the observations of (i) males with distinct nuptial pads and other keratinised excrescences from February to September, (ii) tadpoles in mid-May (our observation) and August (Mendelssohn and Steinitz, 1943), and (iii) the observed weight losses in recaptured females of L. nigriventer, we hypothesise a relatively prolonged reproductive period with egg depositions potentially taking place at least from March to June, and possible from February to September. This extended reproductive season, if confirmed, would be longer than in the three sympatric amphibian species, i.e., February/March–May in B. variabilis, March/April–June in H. savignyi, and May–August/September in P. bedriagae (Degani and Mendelssohn, 1984).