Can fish live in water that is 100.4 degrees Fahrenheit?

Most fish cannot survive in water that is 100.4 degrees Fahrenheit (38 degrees Celsius), as this temperature exceeds their thermal tolerance limits. Most freshwater and marine fish thrive in much cooler waters, typically between 60-80 degrees Fahrenheit (15-27 degrees Celsius). However, some species, such as certain tropical fish or those adapted to extreme environments, may tolerate higher temperatures, but 100.4 degrees is generally too warm for the majority of fish. Prolonged exposure to such high temperatures can lead to stress, reduced oxygen levels, and ultimately death.