>>28215369Speaking of this, a hacker/coder made a calculator for fishing chains and dexnav shiny rates.
https://mrnbayoh.github.io/pkmn6gen/shiny_calculator/Also figured out how dexnav shinies work too. Lots of technical junk.
https://mrnbayoh.github.io/pkmn6gen/dexnav_shiny/Long story short, the higher your search level, the higher the chance of finding a shiny. Chains exist at the 49 & 99th chain where the 50 & 100th pokemon will have an increased chance of being shiny at 5x and 10x respectively.
Pic related shiny rates taken from that calculator if he's right...which he likely is. Parentheses is the shiny charm chance..