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An 11.0 km section of the Caia/Caya river in Lisboa e Vale do Tejo. International watercourse with barbel, eel, and potential black bass; fishing access subject to bilateral agreements.
The Rio Caia / Río Caya (11.0 km) is a river in Lisboa e Vale do Tejo, Portugal, open to anglers with a valid ICNF licence. Species present include barbel, eel, black bass.
Night fishing is not permitted at Rio Caia / Río Caya under current Portuguese regulations. Plan for daytime sessions only.
Boats are permitted at Rio Caia / Río Caya. Check current ICNF conditions for any restrictions on engine size or access points.
ICNF national fishing licence (Licença de Pesca Desportiva) — a single national licence covers all public freshwater fishing across Portugal. Purchase online at icnf.pt. Day, weekly and annual permits are available. No Portuguese residency required — a valid passport is accepted.
Rio Caia / Río Caya holds barbel, eel, black bass.
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All anglers require a valid ICNF fishing licence before fishing at Rio Caia / Río Caya. Purchase online at icnf.pt — no Portuguese residency required. Night fishing at certain ICNF-designated reservoirs requires additional authorisation noted on your permit.
Portugal is best reached from the UK via the Brittany Ferries Portsmouth–Santander crossing (~24 hours), landing you in northern Spain within a 2–3 hour drive of the Portuguese border. Alternatively, fly to Lisbon or Faro for southern venues. Driving via the Channel Tunnel is an option for the Minho/Douro region but adds significantly to journey time.
Portugal fishing is regulated by ICNF (Instituto da Conservação da Natureza e das Florestas). A national fishing licence is required for all freshwater fishing. Licences are available online at the ICNF website or from local fishing shops. Species like carp and black bass are catch-and-keep on most waters — check regulations for your specific venue.
Portugal's fishing season is broadly year-round for most coarse species, with no statutory close season on most reservoirs. Carp fishing in the large Alentejo reservoirs (Alqueva, Vigia, Montargil) peaks from April through October, with late summer producing some of the continent's biggest catches. The water temperature in these large southern reservoirs stays high enough for active carp through November. Trout fishing in the northern mountain rivers (Lima, Minho tributaries) is restricted to the official season (typically February–August). For black bass, June through September in the reservoirs is outstanding.
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