The Longface Emperor, Longface Emperor, Long-nosed Emperor, scientifically known as Lethrinus olivaceus, is a prominent species of fish found in various marine environments. This fish is recognized for its distinctive elongated snout and olive-green coloration, which contributes to its name.
Description & Characteristics
The Lethrinus olivaceus can reach a maximum size of 100.0 cm, making it a considerable inhabitant of the ocean depths. Its body is elongated and compressed laterally, with a prominent snout that extends beyond the lower jaw. The dorsal fin is long and continuous, with a distinct notch separating the spinous and soft-rayed portions. The anal fin is similarly elongated and comprises three spines followed by eight to nine soft rays. The color of the Lethrinus olivaceus is generally olive-green to brown, with darker markings on the sides and a lighter belly.
Habitat and Occurrence
The Longface Emperor, Longface Emperor, Long-nosed Emperor, Lethrinus olivaceus, is a deep-water fish typically found in the Subtidal, sublittoral, infralittoral, and deep zone of the oceans, ranging from the lower limit of the intertidal zone to the shelf edge at about 200 m water depth. It frequents neritic environments, demonstrating a preference for marine zones characterized by diverse ecosystems and abundant food sources.
Taxonomy
The species Lethrinus olivaceus is categorized within the Class: Teleostei, Order: Eupercaria incertae sedis, and Family: Lethrinidae. This classification places the Longface Emperor, Longface Emperor, Long-nosed Emperor within the broad category of ray-finned fishes, further defining its position in the phylogenetic tree of aquatic life.
Feeding
The Lethrinus olivaceus is a predatory fish that feeds on a variety of crustaceans and fish. Its diet includes crabs, crustaceans, edible crab, fish (little fishes), krill, lobster, mysis, rock lobster, rock shrimps, shrimps, and sepia. The Lethrinus olivaceus uses its long snout to probe into crevices and under rocks to locate its prey. Its powerful jaws allow it to crush the shells of its prey, making it a highly efficient predator in its marine environment.
Image References