Migration
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Oceanodromous. Migrating within oceans typically between spawning and different feeding areas, as tunas do. Migrations should be cyclical and predictable and cover more than 100 km.
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Trophic Strategy
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Juveniles associate with drifting seaweed. Plankton feeder (Ref. 12114, 12115).
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Biology
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Commercially cultured in Japan. Juveniles associate with drifting seaweed. Plankton feeder (Ref. 12114, 12115).
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分布
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分布於印度-西太平洋區。由非洲東岸至南中國海、東中國海及日本。台灣東部、西部、北部、東北部及澎湖海域均有分布。
利用
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為味美的食用魚，刺少，處理容易。是台灣人工魚礁投放處，經常聚集之經濟性魚種，尤以北部海域較多。
描述
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體延長，側扁，呈長橢圓形。體長為體高之2.7-3.4倍；第二背鰭起點至臀鰭起點的距離之2.9-3.8倍。口小，端位。鰓裂位於眼後半部下方，且幾乎全在口裂線之下。體鱗小，菱形，其上散佈約十多根小細棘；恥骨末端具兩對不可活動之特化鱗，收縮時不達肛門；腹鰭膜不發達。
第I背鰭棘較細，位於眼後半部上方；背鰭與臀鰭前鰭條遠長於後鰭條，最長背鰭鰭條約為體長之0.15倍。體淡青灰色，體側有些褐色斑塊。背棘鰭膜黃色，各鰭鰭條均為藍綠色；胸鰭、尾鰭鰭膜白色。
棲地
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成魚屬於中底層性魚類，常大量成群出現，而6公分以下的幼魚則大多在靠近海底處活動。屬雜食性魚類，以底棲動物及藻類為食。
Black scraper
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The black scraper (Thamnaconus modestus) is a species of filefish in the family Monacanthidae. It is found in the temperate waters in the Northwest Pacific Ocean. It is commercially fished in China, and has been successfully aquacultured.[1]
Sources
"Thamnaconus modestus" .IUCN Red List of Threatened Species. 2019
References
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Black scraper: Brief Summary
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The black scraper (Thamnaconus modestus) is a species of filefish in the family Monacanthidae. It is found in the temperate waters in the Northwest Pacific Ocean. It is commercially fished in China, and has been successfully aquacultured.
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