I haven't caught that many but so far I have caught:
Shiny Wailmer (Fishing Method at chain of 23)
Shiny Carvanha (Fishing Method at chain of 397!)
I am trying to catch shiny Corphish but I keep breaking the chain :( on the dexnav I have seen the Pokemon around 300 times! :(:(:(:(:(:(:(:(
What Shinys have you caught???