
Photos: nano4773 (CC BY-SA 3.0) — via Wikimedia Commons
A reservoir on the Mendoza River, just over an hour from the provincial capital, with turquoise waters at the foot of the pre-cordillera and pejerrey (silverside) and rainbow trout. A scenic lake closely tied to the city of Mendoza.
The pejerrey is fished from a boat and from shore, with a good season in the cooler months; the trout appears in the colder water and the river inflows. Potrerillos has boat ramps, clubs and services, and combines fishing with water sports and mountain tourism.
Salmónidos: la ventana de extracción (1/11/2025 al 3/5/2026, cupo 5 por salida) ya cerró; del 10/6 al 30/10/2026 rige captura y devolución obligatoria en todo el embalse y en el río Mendoza, sólo con mosca y anzuelo sin rebaba. Después del 30/10/2026 depende de la norma 2026/2027, aún no publicada. El pejerrey no está habilitado en Potrerillos. Carpas y dientudos, todo el año, sin cupo fijado acá, y sólo desde la orilla y con señuelo artificial. Bagres, cangrejos y anguila criolla VEDADOS todo el año en toda Mendoza. Res. 327/2025 (Mendoza), arts. 2, 3, 4, 6, 9 y 11.
At Potrerillos Reservoir (Mendoza) you can catch Argentinian silverside (pejerrey), Rainbow trout. Allowed styles: Boat, Shore, Trolling.
50 km from the city of Mendoza, on Route 7.
Mendoza provincial permit.
Original text in Spanish: “Salmónidos: la ventana de extracción (1/11/2025 al 3/5/2026, cupo 5 por salida) ya cerró; del 10/6 al 30/10/2026 rige captura y devolución obligatoria en todo el embalse y en el río Mendoza, sólo con mosca y anzuelo sin rebaba. Después del 30/10/2026 depende de la norma 2026/2027, aún no publicada. El pejerrey no está habilitado en Potrerillos. Carpas y dientudos, todo el año, sin cupo fijado acá, y sólo desde la orilla y con señuelo artificial. Bagres, cangrejos y anguila criolla VEDADOS todo el año en toda Mendoza. Res. 327/2025 (Mendoza), arts. 2, 3, 4, 6, 9 y 11.”
Now 5° · wind 3 km/h NW
Boat, shore or trolling. 3 guides nearby.
Base data: OpenStreetMap (ODbL)
| Season | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | NOW |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Argentinian silverside (pejerrey). In season: APR–SEP. Peak: JUN–AUGabundant here | Off | ||||||||||||
| Rainbow trout. In season: NOV–APR. Peak: MAR–APR | Off |
Dark: each species' peak months. Medium: its season at this place. “Abundant here” marks the most common ones in Potrerillos Reservoir.
The pejerrey is a medium-sized fish with a delicate mouth, so the tackle leans to the fine and sensitive side. A recommended setup:
The philosophy of the tackle is simple: the finer and more sensitive it is, the more bites you will detect and the more you will enjoy the fight of this silver fish.
The gear is matched to the setting and the size of trout you are after, but these setups cover most situations in Argentina:
Spinning (general use, trout of 1 to 3 kg):
Guides, campsites and places to stay that work these waters.
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There are already 48 businesses loaded in the area. If yours is not there — or it is and you are not running it yet — the listing is free and puts you in front of whoever is planning a trip to Potrerillos Reservoir.
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In October the species of Potrerillos Reservoir are past their best moment. Off season does not mean there is a closed season.
In Potrerillos Reservoir it is worth going when its main species bite: Argentinian silverside (pejerrey) (APR–SEP); Rainbow trout (NOV–APR).
In Potrerillos Reservoir you can fish Boat, Shore, Trolling.
Yes: PESQA lists 3 guides working Potrerillos Reservoir, among them Rua-zol, Pioneros Fly Fishing, Cascarano Armas S.a.
Near Potrerillos Reservoir PESQA lists 24 places to stay: Cabaña del Alto Tupungato, Cabaña Casa Real, Cabañas Suñer.
Around Potrerillos Reservoir there are 18 marinas and tackle shops: El Diamante, Todo pesca "El Capitán", Nautica Lujan.
Potrerillos Reservoir is in the province of Mendoza.
Fly:
For trophy specimens (5-10+ kg at the Strobel): step up the power—medium/medium-heavy spinning with 15-20 lb braid and a robust fluoro leader, or a 7/8 fly outfit—because these are fish with strength and runs far superior to the average trout.
In every case: a well-adjusted drag, sharp hooks (barbless if you are going to release), and a rubber net to handle the fish with the least possible harm.