To be explicitly clear, yes, you need tackle. You just didn't need to send it in first. If you're confident he won't warp off right away (as in, we're within his engagement envelope), you can land it on grid with the rest of the fleet or just after to pin down targets as we start burning them down.1. We don't really need to have tackles in arranged fights at all? But even if we win fight, but all preys leave the grid alive... it is like a sex alone.
Just don't send it in alone to start the fight unless you really need it to keep him from warping away.