Pejerrey Odontesthes bonariensis
The pejerrey (silverside) of the Buenos Aires lagoons: 25 cm minimum size and a closed season from 1 September to 30 November.
Updated
Key facts
- Native species, according to the Buenos Aires Ministry of Agrarian Development.
- Minimum catch size: 25 cm (official measuring ruler of the Ministry, checked 27/10/2026).
- Closed season: 1 September to 30 November across the province; during it you may fish only on Saturdays, Sundays and public holidays (closed seasons page, checked 27/10/2026).
- Limit during the closed season: 10 pieces per angler per day on lagoons without a limit of their own, such as Chascomús (lagoon-by-lagoon limits on the same page).
Minimum size: 25 cm
The Buenos Aires Ministry of Agrarian Development states a minimum catch size of 25 cm on its official measuring ruler (outreach material, checked 27/10/2026). Measure every fish before deciding to keep it: anything shorter goes back in the water.
The pejerrey closed season
According to the Ministry’s closed seasons page, the closed season runs from 1 September to 30 November (Disposición 89/08, renewed automatically). Pejerrey competitions and commercial fishing are prohibited; sport fishing is allowed only on Saturdays, Sundays and public holidays, with a per-angler daily limit that varies by lagoon. Powerboating is prohibited and boats with an internal-combustion outboard may travel at 15 km/h at most.
Licence
To fish in Buenos Aires province waters you need the sport fishing licence. Prices are not on the Ministry’s page: check them before you go.
Where to fish it
The Chascomús lagoon is the largest of the seven Encadenadas: see our guide to Chascomús, with the day’s wind and the access points we can confirm.
Sources consulted (3)
Guides who fish for pejerrey, with prices
Public listings by town; the price is the one each guide publishes, with the date we checked it. Inquiries go through the Pescamapa form.
- 3 in Chascomús: no published rate · See guides →