Missing fish

[Gregs]

i just had this happen to a week old grass wrasse. same symptoms then suddenly gone. really hope he reapears soon as an ich outbreak occured in the tank and all others have been evacuated lol. i just dont understand how a fish can dissapear/die like that. i got a lot of rock though, but ive flashlit all the crevaces with no sign. i had a cucumber dissapear too. saltwater is strange