This shiny app calculates and plots the total rod catch of various species of fish in Scottish Rivers. The data was collected by marine scotland as is available online here

You can use the slider and dropdown menus below to change what is shown in the plot. You can select multiple rivers but only one species. Once you've made your selections, click the button to change the plot. If you wish to add the trend, click the tickbox.

If you want to find the exact values of the catch each year hover your mouse over the chosen year.