Taxonomy
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Actinopterygii
- Order
- Perciformes
- Family
- Pleuronectidae
- Genus
- Pseudopleuronectes
- Species
- yokohamae
Habitat
This species inhabits shallow coastal waters and estuaries in the Northwest Pacific, including areas around Japan, Korea, and the Yellow Sea. It prefers sandy or muddy substrates where it can bury itself for protection. It is commonly found from the intertidal zone down to depths of about 100 meters.
Diet
The marbled flounder primarily feeds on small fish, crustaceans, polychaetes, and other benthic invertebrates. It uses a sit-and-wait hunting strategy, ambushing prey from its buried position on the sea floor. Feeding activity peaks at night or during low visibility conditions.
Behavior
Marbled flounders are solitary and sedentary, spending most of their time partially buried in sediment to avoid detection. They exhibit excellent camouflage by changing color to match their surroundings and are generally inactive during the day, becoming more active at night. During spawning seasons, they may undertake short migrations to suitable breeding grounds.
Fishing
Target the marbled flounder, a favored species for recreational anglers in the Northwest Pacific, including waters around Japan, Korea, the Yellow Sea, and the East China Sea, by focusing on sandy or muddy substrates in shallow coastal areas and estuaries from the intertidal zone to about 100 meters deep; use bottom fishing techniques like drifting bait along the seafloor or still-fishing from a boat or shore to mimic its ambush predation style. Opt for light to medium spinning or baitcasting tackle, including a 7-9 foot rod with 10-20 pound test line, a sturdy reel, and size 1-4 hooks with enough weight (like sinkers) to keep bait on the bottom, paired with live baits such as worms, shrimp, or small fish to attract its diet of crustaceans and benthic invertebrates, or try artificial lures like soft plastics and jigs for a more dynamic approach. The best seasons are spring and summer during spawning migrations, with peak activity at night or during low-visibility conditions like dawn and dusk when the fish are most active; always check local regulations for effective management tools that ensure sustainable populations. Record sizes reach up to 50 cm in length and 4 pounds 4 ounces, with IGFA records highlighting impressive catches that underscore the thrill of this species—aim for personal bests while practicing catch-and-release to support conservation efforts, as angler-funded programs through license fees and habitat restoration initiatives in these regions help maintain healthy flounder populations and protect vital coastal ecosystems.
Conservation Status
Listed as Not Evaluated by IUCN.