Do you have to have fishing license to fish here?

Yes

Yes, you definitely need a license...

All freshwater fishing requires a license. You don't need a fishing license if your fishing off the land in saltwater. Most piers in saltwater requires a license.

Yes, in the State of Florida, one needs a fishing license for both fresh and salt water fishing regardless of the body of water you're fishing in.

Yes, you should always have a fishing license