Taxonomy
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Actinopterygii
- Order
- Perciformes
- Family
- Istiophoridae
- Genus
- Tetrapturus
- Species
- georgii
Habitat
This species inhabits pelagic waters of the Atlantic Ocean, typically in depths from the surface to about 200 meters. It prefers warmer offshore areas with strong currents, such as those near the continental shelf edges or upwelling zones, and is found from the subtropics to temperate regions.
Diet
The roundscale spearfish primarily feeds on small pelagic fish like mackerel and flying fish, as well as squid. It hunts by using its bill to slash through schools of prey, often in open water during daylight hours.
Behavior
Roundscale spearfish are typically solitary or form loose schools, exhibiting fast, powerful swimming to chase prey. They are known for acrobatic leaps when hooked by anglers, indicating high energy levels. This species is migratory, following warm currents and seasonal prey availability, and shows little territorial behavior.
Fishing
Target the roundscale spearfish, a thrilling pelagic game fish in the Atlantic Ocean, using trolling techniques with live bait or lures to mimic their preferred prey like mackerel, flying fish, or squid; this method capitalizes on their fast, solitary hunting behavior in open waters. Opt for heavy-duty offshore tackle, including a sturdy 6-7 foot rod rated for 30-50 pound test line, paired with a high-capacity reel to handle their acrobatic leaps and powerful runs. The best seasons are during warmer months like summer when they migrate through subtropical and temperate regions, with peak fishing times in daylight hours, especially dawn and dusk, near upwelling zones and continental shelf edges from the surface to 200 meters off coasts such as the U.S. Atlantic seaboard, Mediterranean, or Angola. These fish can reach up to 70 pounds and lengths of 1.5 to 2.5 meters, with IGFA records highlighting their status as a premier sport fish—check current IGFA listings for specific world records. Conservation-wise, angler-funded programs through license fees and excise taxes support habitat protection and stocking initiatives, while catch-and-release practices and bycatch management ensure sustainable populations for this Data Deficient species, as classified by IUCN, reinforcing fishing's role in aquatic conservation.
Conservation Status
Listed as Data Deficient by IUCN.