Why may the quality of fish not be good around the spawning season?

The quality of fish may decline around the spawning season due to physiological changes that occur as they prepare to reproduce. During this time, fish often divert energy from growth and fat accumulation to reproductive processes, leading to a decrease in flesh quality. Additionally, spawning can result in altered taste and texture, as well as increased stress levels, which can further impact overall quality. These factors contribute to fish being less desirable for consumption during this period.