justice on the pond

the fish have stayed low
for several days now
afraid of something
blue herons on the prowl
maybe ten fish are gone
so i bought a net
covered the pond
no more will they get

now i worry about the frogs
maybe they're gone
but rain comes in two days
i've got to raise the net
i want everyone safe
and frogs travel in the rain
pond stuff takes time
but peace i'll maintain