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
Wooden fish wooden fish is simpler in shape and no design is carved onto the fish. It is more oblong in shape. It has a handle for easy carrying during portable uses. The Korean versions of a wooden fish are different in the sense that they provide a deeper, more wooden-like hollow sound when struck. The original type of wooden fish is literally in the shape of a fish. Along with a large temple bell and drum, It is found suspended in front of Buddhist monasteries. When proceeding with various duties (such as eating, lectures, or chores), a monk and a supervisor