A species of freshwater fish in the Siluriformes family, a general term for bony fish in the Siluriformes order. The catfish Parasilurus asolus (illustration) is widely distributed throughout most of Japan, Taiwan, the Korean peninsula (except the east coast), and the eastern part of the Asian continent. It inhabits the muddy or sandy bottoms of lakes and ponds in plains and rivers with slow currents, and is often found in areas where aquatic plants grow thickly on the surface of the water. In clear water, it hides in the shadows during the day, and often comes out to hunt for food in the evening and at night, or when the water becomes muddy after rain. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
ナマズ目ナマズ科の淡水魚の1種,広義にはナマズ目に属する硬骨魚の総称。ナマズParasilurus asolus(イラスト)は日本のほぼ全土,台湾,朝鮮半島(東海岸を除く)およびアジア大陸の東部一帯に広く分布する。平野部の湖沼や流れの緩やかな河川の泥または砂泥底にすみ,水面に水草の繁茂したところに多い。水の澄んだところでは昼間は物陰に潜み,夕刻から夜間にかけてや雨後の水の濁ったときなどに出てよく餌をあさる。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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