Species

Sailfish

Indo-Pacific sailfish. The sail of the tropics: a billfish with a giant dorsal fin, caught in record numbers off Costa Rica, Guatemala and Panama and almost always released.

Istiophorus platypterus

Photo: 出羽雀台, Wikimedia Commons, CC BY-SA 4.0, adjusted to 3:2

Spawning: Mainly in the local summer but possible year round, in shallow coastal water, usually in pairs or one female with two or three males; a 33.4 kg female carried 4.8 million eggs released in three batches (German Wikipedia).
Typical method: Trolling ballyhoo on circle hooks (rule of thumb, the standard in Costa Rica and Guatemala)
Top bait: Ballyhoo

Plan a day fishing for Sailfish

How to recognise it

Upper jaw drawn out into a long round spear
First dorsal fin enlarged into a huge sail, dark blue with black spots, tallest in the middle
Very long narrow pelvic fins; back dark blue, sides brownish blue, belly silvery white

Easily confused with: Marlin have a much lower dorsal fin; the swordfish has a flat broad bill and no pelvic fins. The sail is unmistakable (German Wikipedia).

How to catch it

Methods: Trolling ballyhoo on circle hooks (rule of thumb, the standard in Costa Rica and Guatemala), Hookless teaser spread and bait and switch (rule of thumb), Fly fishing behind teasers with a 12 to 14 weight (rule of thumb), Live bait on a kite (rule of thumb)

Baits: Ballyhoo, Skirted trolling lure, Large popper fly, Live bonito or goggle-eye

Costa Rica Pacific: December to April, Guatemala similar, Panama year round with peaks (rule of thumb from travel offers, not official). Water from 21 °C (German Wikipedia).

Habitat and food

Tropical and temperate waters of the Indo-Pacific, highly migratory, 0 to 200 m, usually above the thermocline (FishBase). Prefers 21 to 28 °C, often near coasts and islands; groups of up to 30 fish, hunting packs up to 70 (German Wikipedia). The Atlantic form (Istiophorus albicans) is treated as a synonym by many authors, FishBase lists it separately (max. 315 cm, 58.1 kg).

Small schooling fish such as sardines, mackerel and halfbeaks, plus crustaceans and squid; larvae eat copepods first, then fish larvae (German Wikipedia, FishBase).

Size and age

FishBase: max. 348 cm, commonly around 270 cm, maximum published weight 100.2 kg, maximum age 13 years. German Wikipedia gives usually about 2.5 m, max. 3.80 m and 50 to 100 kg; the largest fish are females. Pacific record fish according to Sport Fishing Magazine: 221 lb (100.2 kg) from Santa Cruz Island, Ecuador, 1947; IGFA database not accessed. Older speed claims of 75 to 110 km/h are outdated, newer studies give at most 36 km/h (German Wikipedia).

Protection and rules

Conservation status: IUCN: Vulnerable (2021; FishBase); the Indian Ocean stock is overfished and the eastern Pacific is probably declining (German Wikipedia). Costa Rica: article 76 of Fisheries Law 8436 declares sailfish a species of tourist-sport interest, article 75 requires the INCOPESCA angler card; commercial longliners must release live sailfish, and the allowed bycatch was cut from 15 to 10 percent in 2023 (Tico Times 2023, opinion piece). Mexico: one billfish per angler per day, reserved for sport fishing within 50 nautical miles (NOM-017-PESC-1994, 2013 amendment). Belize: designated as a sport fish (CZMAI 2019). Panama: operators state catch and release is mandatory for billfish, no official source found. Release is the standard everywhere (Wikipedia: "usually released").

Rules by country

Size limits, bag limits, seasons and licences are set by each country, in the USA by each state. Pescaday does not list these rules: check them with your operator and the national authority before you fish. Notes with sources are given above under conservation status. Licence pages: Mexico, Belize, Costa Rica, Panama, USA. Fishing travel guide

In the kitchen

Edible, also used for sashimi and sushi (German Wikipedia), but valued less than marlin (Wikipedia). Sport anglers almost always release it; in Costa Rica it may only be transported domestically with a special permit (Tico Times 2023).

Sources (8)

Last checked 2026-10-19. Found a mistake? Write to [email protected].

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