Bottom picker for 90g

[dendro982]

Which small fish will do the work of picking pieces of seafood (shrimp, fish) dropped to the bottom during another fish feeding?
Tank is 90g, 1 month old, bare bottom (kitchen board), LR, macroalgae, with 5" tasseled filefish and small valentini puffer, pincushion urchin, blood shrimp and turbo-snail. Would like to add corals in future.
Or may it be some invertebrates?
Any ideas are welcome!

[fnicklaus]

Snails and scavenger inverts. Many large gobies.

[hgbarwick]

You will need a sand bed for most gobys. Do hermits.

[dendro982]

Thanks for the replies! What snails will eat fish/shrimp pieces? Turbo, astrea and nassarius that I have seems only graze on LR.

[yeldarbj]

My nassarius snails come running anytime there is food in the tank (but I have a sandbed), maybe that makes a difference for them. If one of them catches a large chunk of meat, it usually turns into a group feeding frenzy until it is all gone.