* Different species have different behaviors: Some fish are active during the day (diurnal), while others are active at night (nocturnal). Some species are crepuscular, meaning they are most active during dawn and dusk.
* Location matters: Fish activity is influenced by factors like water temperature, light levels, and the presence of food. These factors vary greatly depending on the location (ocean, lake, river, etc.) and time of year.
* What do you mean by "come out?" Are you asking about when they are most active, when they spawn, or when they are visible to humans?
To give you a more helpful answer, please provide me with some more information:
* What kind of fish are you interested in?
* Where are you located?
* What are you hoping to see the fish do?
Once I have more information, I can give you a more accurate answer!