in mousePressed() outside the class you can write
if(fishblue1.inside(mouseX, mouseY)){
fishblue1.hasBeenClicked = true;
print('fish#1 clicked');
}
in mousePressed() outside the class you can write
if(fishblue1.inside(mouseX, mouseY)){
fishblue1.hasBeenClicked = true;
print('fish#1 clicked');
}