From Costa Rica Travel Guide: Vacation and Travel tips
Whichever fishing destination you choose you can be rest assured that you will have access to hotels, fishing equipment, guides and boats. Marinas are equipped with electricity, potable water, telephones, security, boat maintenance and repair services, small vessels and even jet skis. If you just want to cast your line off a pier, they’re available as well.
Deep-sea fishing is rewarding year-around in Costa Rica, with different species more prevalent depending on the season of course. That being said, you can go deep-sea fishing on the Pacific coast and if it’s a marlin or sailfish you’re craving to fight, then this is the place. In addition to marlin and sailfish, you’re likely to catch snapper, wahoo, dorado (dolphin) roosterfish, mackerel, mahi mahi, several kinds of tuna, and much, much more.
On the northern Caribbean coast you’ll find species that differ from those in the Pacific coast, like snook for example. You can also fish the mouths of the canals and rivers for tarpon, which weigh on the average, a hefty 80 pounds. The snook are smaller than the tarpon but will still give you a good fight. Venturing out to sea a little further, you can fish for Atlantic blue marlin, too. There’s also a great chance you’ll hook a few other species of fish such as wahoo, dorado, tripletail, mackerel, kingfish, barracuda, and more.
Your options in fishing Costa Rica are fairly limitless as you can choose between several fishing destinations, whether you like deep ocean waters, rivers, lakes, and streams, or waterways on both the Pacific and Caribbean coasts. For example, the Arenal Lake located inland outside of La Fortuna and spread out below Volcan Arenal is most popular for fishing guapote (rainbow bass), which are also found in Coter Lake, Hule Lagoon, Congo in Sarapiqui, Rio Cuarto Lake in Grecia, Bonilla Lagoon in Turrialba, and Cano Negro in Los Chiles, where the fishing has been growing in the last few years.
As you can see your ‘big’ fish story is right here waiting for you in Costa Rica!