Olive flounder

Paralichthys-olivaceus-Federal-Way-3583

The olive flounder (Paralichthys olivaceus), also known as the bastard halibut, is a species of flatfish in the family Paralichthyidae. It is native to the northwest Pacific Ocean, particularly around Japan, Korea, and China. This species is of significant commercial importance and is commonly used in aquaculture.

Description

The olive flounder has a laterally compressed body typical of flatfish, with both eyes located on the left side of its head. The coloration of the upper side is generally olive to dark brown, which helps it blend into the sandy or muddy sea floor. The underside is usually white. Adult olive flounders can reach a length of up to 103 cm and weigh as much as 9.1 kg.

Habitat

Olive flounders inhabit coastal waters and are typically found at depths ranging from 10 to 200 meters. They prefer sandy or muddy substrates where they can easily camouflage themselves to ambush prey. Juveniles are often found in shallower waters, including estuaries and bays.

Diet

The diet of the olive flounder consists mainly of small fish, crustaceans, and cephalopods. They are ambush predators, lying in wait for their prey to come close before striking.

Reproduction

Olive flounders spawn in the spring and summer months. Females release eggs into the water column, which are then fertilized by males. The eggs are pelagic and hatch into larvae that undergo a transformation from a symmetrical larval stage to the asymmetrical adult form.

Commercial Importance

The olive flounder is a highly valued species in commercial fisheries and aquaculture. It is a popular fish in Japanese cuisine, often served as sashimi or sushi. The species is also farmed extensively in Korea and China.

Conservation Status

According to the IUCN Red List, the olive flounder is currently listed as Least Concern due to its wide distribution and the absence of major threats impacting its population significantly. However, overfishing and habitat degradation could pose future risks.

See also

• Flatfish
• Aquaculture
• Japanese cuisine
• Sashimi
• Sushi