Monognathidae

Japanese: Monognathidae
Monognathidae

…The bones are not yet fully ossified, and the body is flexible and fragile. The deep-swimming fishes that live in the deep-sea zone from 3000m to 5000-6000m below the ocean floor include a few deep-sea species of anglerfish, a few members of the cod family that have come to live away from the ocean floor, and the Monognathidae, but the fish fauna in this layer is extremely poor. In this layer, the tendency for the eyes to degenerate further progresses, and species that lack body pigment begin to appear. …

*Some of the terminology that mentions "Monognathidae" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…骨も骨化が進んでおらず,体が柔軟で脆弱(ぜいじやく)である。 3000m以深より5000~6000mの大洋底にいたる深海帯に生息する深層遊泳性魚類には,チョウチンアンコウ類に属するごく一部の深海性種,ソコダラ類のうち海底から離れて生活するようになったごく一部の仲間,単顎ウナギ類Monognathidaeがいるが,この層の魚類相はきわめて貧弱である。この層になると眼の退化傾向はいっそう進み,体色素を欠く種も出現し始める。…

※「Monognathidae」について言及している用語解説の一部を掲載しています。

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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