what can I fish if get the super rod and go to SS anne and fish at the little pond? (after you enter the ship, there is two bodys of water beside the road you can get into the real one...)

2 things, and then an answer:
1) Do not double post. This is a forum rule.
2) These are not Chats; wait patiently for someone to answer your question, and someone will do so eventually. If you want instant gratification, you can try the chats, where someone may be able to answer your question in real time.

Use the FRLG Map and click on the city where the SS Anne is (Can't believe I'm forgetting this, it's vermillion, right?), and look at the pokemon available there when fishing with a Super Rod. Question answered.