The cause of the fish kill has not yet been determined, but the area they were discovered in was impacted by oil from the BP oil spill.

鱼的死亡原因尚未确定，但是它们被发现的区域受到英国石油公司泄漏原油的影响。

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And often residents are the first to discover a nasty spill or a fish kill in their area.

通常情况下都是普通的居民第一时间发现污物排放到河流里，或发现水里出现死鱼。

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Nutrient overloads lead to low levels of dissolved oxygen in the water, which can kill fish.

WSJ: Connecticut Seaweed: Life Down on the Kelp Farm

Much is washed off by rain, ending up in local watercourses where dissolved nutrients can cause algal blooms and kill fish.

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They kill both fish and invertebrates, irrespective of their commercial value.

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