Wrasses eat shrimps, melanarus included , if the timing is right why not take an easy meal molts make for less work for the fish as they don't need to smash its Body and the shrimp are to sore to defend them selves .
Def sucks but can happen worse is now he prob knows them as food.
Melanarus usually go for smaller food but they can sometimes eat larger shrimp , I'm sure mine ate a small cleaner as well so no more shrimps for me
