bro, monti colony lar.....but i did saw 1 on my digitata... .....it's totally white like ghost.....looks just like a nudi lor.. .....when you see white patches on the monti....that's where they will be, sometimes hiding in crevices and shady areas....some size can be quite big...ard 5-8mm
Until now, dont know which wrasse eats them but believe they get harrassed by the wrasse....(i always see my six line fat fat in the morning previously- ..but they are agressive.. )
In RC, some believe and had proved the grass wrasse eats zoathid nudi, some believe banana wrasse, but no clue for monti nudi.......