The blackfin seabass (''Lateolabrax latus'') is a Perciforme fish in the family lateolabracidae, found primarily in the shallow waters of the Pacific coast of Asia, in Japan and in South Korea. There are only two species in the genus Lateolabrax, known as Asian seabasses. As a perciforme, the blackfin seabass is among the largest order of fish in the ocean. Blackfin seabass live in shallow, tidal or rocky surf zones, partially as a way to escape competition with the Japanese seabass ''Lateolabrax japonicus'', a close and almost identical relative of theirs, and partially for the breeding opportunity in brackish water by the mouths of rivers.
Morphology
The blackfin seabass is a perciforme fish, or perch-like fish; it has a long, silver, elongated body, and a slight fork in the tail. The blackfin seabass is often compared to the Atlantic Striped Bass in size and appearance; Both bass species have a lower jaw which protrudes over the upper jaw, and similar dorsal and anal fins, but the blackfin lacks stripes running along either side of its body. As a perch-like fish, the blackfin seabass contains spines along the dorsal and anal fins and pectoral fins along the sides of its body for defense against predation. The largest blackfin sea bass caught, on record, is 24 lbs. The longest seabass recorded was 94 cm.
Distribution
The blackfin seabass is found in rocky surf zones or tidal areas of shallow water along the coast of Japan, South Korea, and Vietnam. An anadromous fish, it is known to spawn in intertidal zones, eelbeds, and mouths of rivers (although it spends most of its time in the surf). The blackfin seabass is endemic to the area of Southeast Asia and Japan, meaning that it is specific to that geographic area and can only be found there.
Environmental Factors
While there is a geographical separation between blackfin seabass and their closest morphological relative, the Japanese seabass, the two often interact. The two species often engage in heavy interspecific competition, which can harm spawning rates for either fish. The relationship between the two species is complicated and ambiguous: the two are known to engage both competition and sympatry. Japanese and blackfin seabass are easily confused. It is understood that the two share a morphological parent, or common ancestor, the ''Lateolabrax Bleeker.''
Fishing
The blackfin seabass plays a primary and important position in commercial and recreational fishing on the coast of Japan. Both members of the genus Lateolabrax, the Japanese Seabass and the Blackfin Seabass, impact the fishing landscape of Japan. Fishing in Japan constitutes a substantial facet of the Japanese citizen's diet, and most of Japan's population interacts with the fishing industry. The close proximity and commonality of perciforme fish like the blackfin along shores grants them a pivotal role in the fishing industry. The seabass’ role in the fishing infrastructure of Japan adversely affects spawning for the fish species, as well as overfishing; the perciforme order is the most overfished in the world.
Lifestyle
Blackfin seabass spawn at the mouths of rivers, most popularly in Japan. the fish remain larvae for one to three months, and spend their time as larvae in calm eelgrass beds in shallow zones of the ocean and mouths of rivers. As adults, blackfin seabass will return to rocky, inland tidal surf zones. After careful study of their migration and spawning habits, it can be concluded that the blackfin seabass makes frequent changes to their spawning and migration. For example, the seabass recently moved from deeper estuaries in which to spawn to shallower, calmer ones. Scientists attribute this to the availability of food like crustaceans, however, juvenile blackfin seabass are known to practice cannibalism.
The blackfin seabass, ''Lateolabrax latus'', is a species of Asian seabass native to the western
Pacific
The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continen ...
in the coastal waters of central
Japan
Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...
and
South Korea
South Korea, officially the Republic of Korea (ROK), is a country in East Asia, constituting the southern part of the Korea, Korean Peninsula and sharing a Korean Demilitarized Zone, land border with North Korea. Its western border is formed ...
.
This species is found in shallow waters in rocky areas, in
demersal
The demersal zone is the part of the sea or ocean (or deep lake) consisting of the part of the water column near to (and significantly affected by) the seabed and the benthos. The demersal zone is just above the benthic zone and forms a layer of ...
marine
Marine is an adjective meaning of or pertaining to the sea or ocean.
Marine or marines may refer to:
Ocean
* Maritime (disambiguation)
* Marine art
* Marine biology
* Marine debris
* Marine habitats
* Marine life
* Marine pollution
Military
* ...
environments where the number of large predators such as sharks is low, and the population of prey species such as
crustaceans
Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, amphipods and mantis shrimp. The crustacean group ...
,
worm
Worms are many different distantly related bilateral animals that typically have a long cylindrical tube-like body, no limbs, and no eyes (though not always).
Worms vary in size from microscopic to over in length for marine polychaete wor ...
s,
shellfish
Shellfish is a colloquial and fisheries term for exoskeleton-bearing aquatic invertebrates used as food, including various species of molluscs, crustaceans, and echinoderms. Although most kinds of shellfish are harvested from saltwater envir ...
, and small fish is high. It can reach a length of and has been recorded weighing up to . It is a
commercially
Commerce is the large-scale organized system of activities, functions, procedures and institutions directly and indirectly related to the exchange (buying and selling) of goods and services among two or more parties within local, regional, nation ...
important fish,
but is commonly referred to accidentally as the
black sea bass
The black sea bass (''Centropristis striata'') is a species of marine ray-finned fish, a sea bass from the subfamily Serraninae which is part of the family Serranidae, which also includes the groupers and anthias. It is found in the western Atl ...
(''Centropristis''). It is also a very popular
game fish
Game fish, sport fish or quarry refer to popular fish pursued by recreational anglers, and can be freshwater or saltwater fish. Game fish can be eaten after being caught, or released after capture. Some game fish are also targeted commerciall ...
, and is commonly
farmed
Agriculture or farming is the practice of cultivating plants and livestock. Agriculture was the key development in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that enabled people t ...
for a variety of reasons, from being kept in aquariums, game fishing, fertilizer, and food for marine zoo creatures. It is known as the blackfin due to the color of its fins, although the fry and juvenile specimens do not gain this fin color. Despite its size and role as a predatory fish, it is considered harmless to humans, as no attacks from blackfin seabass have ever been reported.
[Masuda, H., K. Amaoka, C. Araga, T. Uyeno and T. Yoshino, 1984. The fishes of the Japanese Archipelago. Vol. 1. Tokai University Press, Tokyo, Japan. 437 p. (text). (Ref. 559)]
Use in cuisine
The blackfin seabass consumption is widespread in sushi bars and restaurants in different areas of Japan.
References
{{Taxonbar, from=Q1920847
blackfin seabass
The blackfin seabass (''Lateolabrax latus'') is a Perciforme fish in the family lateolabracidae, found primarily in the shallow waters of the Pacific coast of Asia, in Japan and in South Korea. There are only two species in the genus Lateolabrax, ...
Fish of Japan
Fish of Korea
blackfin seabass
The blackfin seabass (''Lateolabrax latus'') is a Perciforme fish in the family lateolabracidae, found primarily in the shallow waters of the Pacific coast of Asia, in Japan and in South Korea. There are only two species in the genus Lateolabrax, ...