Question

if i catch 2 spindas will they have different spot patterns in game or will they look the EXACT same(not shiny)

Answer 1

Spinda's spots are based on a hidden mechanic called personality value. There are 4294967295 different personality values so the chance of catching two of the same spinda's are very rare.

Answer 2

They will be different somehow. No two Spindas have the same spot pattern (according to what the game says...).