Zoology. Of fishes: Descending periodically from the upper to the lower reaches of the river, or to the sea, in order to spawn; as the Eel.
| 单词 | θ37588 |
| 释义 | the world > animals > fish > [adjective] > descending river to spawn (1) catadromous1883 Zoology. Of fishes: Descending periodically from the upper to the lower reaches of the river, or to the sea, in order to spawn; as the Eel. |
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