You use a net.
no
winter
No, you cannot catch a shrimp on Animal Crossing (for the Nintendo Gamecube), nor can you catch a shrimp for any of it's successors, Animal Crossing: Wild World and Animal Crossing: City Folk.
You can catch a coelacanth when it is raining or snowing
in december.
Catch all bugs.
you catch them in the ocean in June onwards
no you can't
your house can't catch fire.
i think you have to catch every bug
Down by the sea at random times
There is no such bug as a rain stag.