Nocturnal, usually referred to in relation to Fishing.

The servertime is cut up into several cycles, not just Day/Night :

• 0000 to 0600 (midnight to 6 am) 100% Night
• 0600 to 1200 (6 am to noon) 50/50
• 1200 to 1800 (noon to 6 pm) 100% Day
• 1800 to 0000 (6 pm to midnight) 50/50

Examples of Nocturnal fish :

• Nightfin Snapper
• Stonescale Eel

During High noon you'll catch more :

• Sunscale Salmon