Game Mechanics After completing Quest Angler says which fish will be wanted next time

[Heliodoros]

Simple as it is. This way you can meet the sunrise (or dawn, if you've read my previous idea) in the respected biome to catch wanted fish without even asking lil bro about it.
Think simple addition will make 'Angler Radio' idea obsolete tho, 'cause you'll know about about next day fish beforehand.