Trevally

Trevally is a large fish mostly found in the tropical water. The fish is found in the water of the Indo-Pacific region. The fish has a curved head profile with strong tail scutes. It is the largest known fish in the genus Caranx. The species of fish is an apex predator in the most of habitats. The species of fish have a wide range of offshore and inshore marine environments. This is a powerful and large predatory fish. It usually reaches the maturity at the age of three to four years.

About Trevally

Trevally or Giant Trevally fish was first described by the Swedish naturalist Peter Forssakal in 1775 on the basis of specimens get from the Red Sea off both Yemen and Saudi Arabia. The species of this fish might create confusion with the Atlantic crevalle jack. The species of fish have many other names in the different languages because of its wide distribution. The species put in the genus Caranx in the later classification on the basis of their description and other physical measurements.

Trevally facts, diet, habitat

Scientific NameCaranx ignobilis
Common NameLowly trevally, Barrier trevally, Yellowfin Jack
SizeUp to 170 cm
Average lifespanApprox 24 years
Conservation StatusUnknown

Trevally Characteristics

The species of fish is the largest member from the genus Caranx with the recorded length of 170 cm. the largest fish from this species have the maximum weight of about 80 kg. It is the very rare size in the common specimens and in a rare case exceeds greater than 80 cm. The fish have the vertical curved head having an ovate, flattened compressed body with the dorsal fins. The fish’s dorsal fins have two parts – one contains eight spines and second has one spine consists 18 to 21 soft rays. The caudal fin is strongly forked and larger than the length of the head.

The fish has the silvery-grey fish while the head and upper body consists of a little bit darker color in both males and females. The fish species is known for the prey and the get the dead fish as their diet. The color of the fins varies from grey to black, although the fish getting in turbid water might have yellowish fins and the anal fin being the brightest. The main parts of the fins generally have the lighter color than the leading edges and tips of the dorsal and anal fins.

Trevally Habitat

The fish species commonly found in the shallow waters in different environments which includes rocky reefs, coral and shorefaces, embayments, lagoons, tidal flats, and channels. The species generally found moving between the reef patches, often over large expanses of deeper sand and mud bottoms in the reefs. Large individuals often return to the shallow waters while moving around their habitat. The species is easily attracted to the artificial décor. In Taiwan, this is one of the widespread species around artificial structures. The fish species is known for highly turbid and visibility waters, but in a few cases, it prefers to live in the turbid waters.

Trevally Diet

Trevally fish is a large and powerful predatory fish that mostly hunting during the different times of the day. The diet of these fish slightly varies with the locations and age. The species diet includes other fishes, various species of crustaceans, cephalopods, and often molluscs complete the diet of this giant fish. The species believe in the easy prey of spiders and insects in these habitats. The fish are efficient predators for the crustaceans. Some large fish are even known for eating the lobster head first when it is in a defensive position.

Trevally Behavior

These are powerful predatory fish that usually active during the day as compared to night. The habitat and conditions also affect the active time to these fish. A report says that they are more active during the night in South Africa. The fish are able to prey individually or in groups as well. The fish knows the different hunting techniques from the aggressive attack to reef ambushes. They get power and ability of swimming in water that they used to prey. These fish generally target the small fish but the large trevally may feed fusiliers and juvenile turtles.

Interesting facts about Trevally

  • This is the largest fish of the genus Caranx.
  • It is a widespread fish found in the tropical waters.
  • The maximum length of the fish is observed 170 cm.
  • The average size of the fish is about 80 cm.
  • The fish has the lifespan of 20-25 years in the wild.
  • It is the powerful carnivorous fish and even eats dead fish.
  • The fish gets the maturity at the age of 3-4 years.
  • In Taiwan, the fish is the successful breed for agriculture purpose.
  • The eggs don’t get the parental security or guidance.

Trevally Reproduction

Both male and female get mature for breeding in the age 3-4 years. They are habits around the offshore reefs during the spawning season that lasts for 4 months per year. The process of the spawning event takes place at specific stages of the lunar cycle. The species gather near the sea floor in groups of more than a thousand. A female chased by the four darker male that would be suitors until a pair sink to the sandy bottom where sperm and eggs are released. Then the pair swims away and before rejoining the school, the male gets back to silver coloring. The eggs will not get the parental care.

Conditions Affect Trevally Species

The species have only a few enemies under the water but these are daily threatened by the humans. They are usually eaten fresh but can also be frozen up to 3 months. Change of climate, water pollution, and reef destruction can also be dangerous for underwater creatures.

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