Fish kill dead zones in the gulf are mainly created by the nitrogen and phosphorus enrichment of the Lower Mississippi River. Some species of fish exhibit mass simultaneous mortality as part of their natural life cycle. Fish kill due to spawning fatalities can occur when fish are exhausted from spawning activities such as courtship, nest building, and the release of eggs or milt (sperm). Fish are generally weaker after spawning and are less resilient than usual to smaller changes in the environment. Examples include the Atlantic salmon and the Sockeye salmon where many of the females routinely die immediately after spawning. A
Be Careful What You Fish For "The Little Mermaid", but none of the romantic plot is set up when Billy shows up in the first place. It’s the same random meandering through well-worn sitcom plot clichés that keeps "Family Guy" saddled with the “lazy” label. If this rerun comes on as some mindless background filler, it’ll do the job dutifully, but it’s getting increasingly frustrating to watch the show come up with material for Adam West that always hits the mark, but never find a way to fit other high-profile guest appearances into the framework." Be Careful What You Fish For "Be Careful What You Fish