Picasso with Black Sea Cuke?

[Fishfreak]

Hi,

I'm keen to add a Picasso in my FOWLR. However I have a black sea cuke. If I get the smallest Picasso I can find (like no larger than 2 cm), is there any chance it may make a meal out of the cuke? I want to keep the cuke as it does a great job keeping the sand clean. Have read somewhere that a captive small trigger fed on prepared food is less likely to be a livestock eater as it grows.

Thanks for helping!

[FuEl]

Think the cuke should be fine after the trigger "samples" it. They don't taste that good.