Bigeye Trevally vs. Giant Trevally

Attribute	Bigeye Trevally	Giant Trevally
Scientific Name	Caranx sexfasciatus	Caranx ignobilis
Size	Up to 1 meter	Up to 1.7 meters
Weight	Up to 18 kg	Up to 80 kg
Coloration	Silvery with yellow fins	Silvery with dark stripes
Distribution	Indo-Pacific region	Indo-Pacific region

Physical Appearance

Bigeye Trevally and Giant Trevally are both species of fish that belong to the Carangidae family. Bigeye Trevally, as the name suggests, has larger eyes compared to the Giant Trevally. The Bigeye Trevally also has a more slender body shape, while the Giant Trevally is known for its robust and muscular build. In terms of coloration, Bigeye Trevally tends to have a silvery body with a yellowish tint, while the Giant Trevally is characterized by its dark grey to black coloration.

Size

When it comes to size, the Giant Trevally is the larger of the two species. Giant Trevally can grow up to 170 cm in length and weigh as much as 80 kg, making it one of the largest species in the Carangidae family. On the other hand, Bigeye Trevally typically reaches lengths of around 60 cm and weighs up to 3 kg. The size difference between the two species is quite significant, with the Giant Trevally being much larger and more imposing in appearance.

Habitat

Both Bigeye Trevally and Giant Trevally are found in tropical and subtropical waters, but they tend to inhabit different types of environments. Bigeye Trevally is commonly found in deeper offshore waters, often near coral reefs or rocky outcrops. On the other hand, Giant Trevally is known to inhabit a wider range of habitats, including shallow coastal waters, lagoons, and even estuaries. The Giant Trevally is also known to be more adaptable and can thrive in a variety of marine environments.

Behavior

Bigeye Trevally and Giant Trevally exhibit different behaviors when it comes to feeding and hunting. Bigeye Trevally is known to be a more solitary hunter, often preying on smaller fish and crustaceans. In contrast, the Giant Trevally is a highly aggressive predator that hunts in schools and is known to take down larger prey such as squid, octopus, and even small sharks. The hunting behavior of the Giant Trevally is more coordinated and strategic compared to the Bigeye Trevally.

Reproduction

Both Bigeye Trevally and Giant Trevally are pelagic spawners, meaning they release their eggs and sperm into the water column where fertilization takes place. However, there are some differences in their reproductive behavior. Bigeye Trevally tends to spawn in deeper offshore waters, while the Giant Trevally is known to spawn in shallower coastal areas. Additionally, the Giant Trevally is known to have a longer spawning season compared to the Bigeye Trevally, which may only spawn during specific times of the year.

Commercial Importance

Both Bigeye Trevally and Giant Trevally are important commercial fish species that are targeted by fisheries for their meat. The Giant Trevally is particularly prized for its large size and strong fighting ability, making it a popular target for recreational anglers as well. Bigeye Trevally is also sought after for its flesh, which is considered to be of high quality and is often used in sashimi and sushi dishes. Both species are subject to fishing pressure, with conservation efforts in place to ensure their sustainability.