求翻译：'Blackwater' is the term used to describe the kind of water found in the natural habitat of some acidic water fishes such as bettas, gouramies, killifish and arowanas. The water in such biotopes tend to be amber or tea coloured due to tannins that leach out of driftwood, peat moss and fallen leaves. Indian Almond (Terminalia/Ketapang) trees tend to shed their leaves throughout the year and would even dump almost all their leaves a few times in a year. As a result, where there are Indian Almond Trees, the leaf-litter in the blackwater stream, swamp or pond would comprise mostly of Indian Almond Leaves. In other words, the blackwater is black largely due to the tannins leaching out of dried Indian Almond Leaves that have fallen into the water.是什么意思？

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