a fish which swims up a river from the sea to spawn
【動物, 動物学】 an anadromous fish.
〈虫などの〉 an ovipositor
《at》 egg‐laying time; a laying period
〈魚の〉 the spawning season [time]
an egg‐laying site.
読み方 さんらん
Lying about in disorder:(=する) to lie about in disorder; to be scattered about in disorder