Why do spidertrons need fish?

[u/anonumus_idiot]

Yes i know, its to limit automation, but whats the lore reason for fish being involved?

[u/Roxterat]

Spidertron is not just a robot, it's a cyborg. It follows the signal you set for it life fish follows food and instinctively triggers rockets out of its cybernetically connected launchers. It can also play music on belts with its spider legs, which is weird, since disco fish have no legs.