If you only need one type of those indicators you can simply deactivate the others and re-enable them later again once you need them.
Just right-click on the minimap and you will be able to choose what to display. Tick the boxes you want to see (Find Fish, Herbs, Mining Nodes, etc) and untick the one(s) you don't want.
This way you can enable ores when mining or fish when fishing and so on. It's also pretty useful when you have two gathering professions and want to do only one at a time.
(The option for a gathering profession appears when you have learned that profession.)