Crustacean and crispbread? Maybe (6,4)
I believe the answer is:
spider crab
'crustacean' is the definition.
(spider crab is a kind of crustacean)
'crispbread? maybe' is the wordplay.
'maybe' is an anagram indicator.
'crispbread' with letters rearranged gives 'SPIDER-CRAB'.
'and' is the link.
(Other definitions for spider crab that I've seen before include "little creature" , "Aquatic creature" , "Crustacean with long thin legs" , "Type of crustacean" , "shellfish" .)