Japanese sea bass
species of fish

The Japanese sea bass (Lateolabrax japonicus) is a species of catadromous marine ray-finned fish from the Asian sea bass family Lateolabracidae. It is found in the Western Pacific.
Vernacular names
In the Kantō region and Shizuoka Prefecture, it is called seigo (セイゴ, 鮬) when under 25 cm (9.8 in) in length. At 3 years of age, when it has attained a length of nearly 60 cm (24 in), the name changes to fukko (フッコ) or suzuki (スズキ, 鱸). In the Kansai region, it is called seigo, hane (ハネ) or suzuki, and other regions may have names for this fish different from the ones just listed.
In China, this fish is commonly called 花鲈 (traditional Chinese: 花鱸).
Description
The Japanese sea bass has a slightly forked tail and a large mouth, with the lower jaw protruding beyond the upper jaw. Younger fish have small black spots on the back and dorsal fin; these tend to be lost in larger fish. The first dorsal fin has 12-15 spines; this is followed by 12-14 soft rays in the second dorsal fin. The anal fin has 3 spines and 7 to 9 soft rays.
The public source identifies “Japanese sea bass” as species of fish. This brief keeps that definition visible, then builds a research path around Japanese, bass and species.
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Datasets, specimens, observations and peer-reviewed methods provide the appropriate test for the technical claims summarized here. The source revision retrieved here is dated Jul 9, 2026. The linked authority identifier is Q1151311. None of the 0 selected statements returned an explicit reference.
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This entry incorporates text from “Japanese sea bass” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.