Frenzied fishing spots similar to what you see at Tempoross but for all other fishing spots that will periodically spawn and provide an increase in catch rate.
The idea is that fishing experience rates are generally abysmal and something like this would reward people who are paying attention rather than afk with increased experience and gp per hour, even if it’s marginal.
If people think this is too OP, it could be limited to places like the Fishing Guild and Pisc Fishing Colony.