Deflect Particles

Hey guys,

I am making an underwater submarine game and have fish being spawned in from a particle emitter (placed in, not spawned from blueprint). I am trying to make it so when the fish touch the submarine they deflect away and keep moving. Right now, when the fish hit the submarine they stop moving, and if i keep going forward they pass right through the submarine.

This is my first time working with particles so if you need any more information just ask.

Here is my setup for my particles and the submarine collision: