
Photos: Antonio Gritta (CC BY-SA 3.0) — via Wikimedia Commons
En el sur profundo de Mendoza, cerca de Malargüe, corre el río Grande: un gran río de deshielo, potente y de mucho volumen, que arrastra el agua de las nieves cordilleranas con fuerza. En sus aguas frías y correntosas se crían trucha arcoiris y trucha marrón que toman buen porte al amparo de la corriente y los pozones grandes.
Es pesca de río fuerte: mosca con ninfas y streamers pesados que bajen en la vena de agua, y spinning con señuelos de peso para dominar el caudal y peinar los veriles. En general, la mejor época llega cuando el deshielo baja y el río aclara, del otoño al comienzo de la primavera, porque en pleno verano suele venir cargado y turbio. Pesca de estepa malargüina, viento y horizonte abierto, para quien busca un río de carácter.
captura y devolución obligatoria del 1 may al 28 jun 2026 (cuenca Grande).
At Río Grande (Mendoza) you can catch Brown trout, Rainbow trout, assorted river fish. Allowed styles: River.
Se accede desde Malargüe hacia el sur, por caminos de la zona que acompañan la cuenca del río Grande. Es terreno agreste y de distancias largas: informate sobre estado de caminos y caudal antes de ir.
Se requiere el permiso de pesca provincial de Mendoza, online o en comercios. Respetá la temporada, los cupos y los tramos con manejo especial del reglamento vigente.
captura y devolución obligatoria del 1 may al 28 jun 2026 cuenca Grande .
Base data: Wikidata (CC0)
| Season | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | IDX | NOW |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Brown trout. PEAK MAR–APR | 15 | Off | ||||||||||||
| Rainbow trout. PEAK MAR–APR | 15 | Off |
The number (0 to 100) sums up how likely the species is to be active here this month: it weighs the season, recent catch reports and, where there is a river gauge, the water level.
Gear is chosen according to the environment and the expected size. A versatile, concrete setup:
Spinning (general use, rivers and lakes):
Fly fishing:
Recommended accessories: rubber net (less harm to the fish for release), forceps for removing hooks, barbless hooks, and waders for safe wading in cold water.
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):
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In August the species of Río Grande are past their best moment. Off season does not mean there is a closed season.
In Río Grande it is worth going when its main species bite: Brown trout (NOV–APR); Rainbow trout (NOV–APR).
In Río Grande you can fish River.
Yes: Pesca con Mosca Neuquén Norte works in Río Grande. Services and contact details are on their page.
Río Grande 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.