sandfishDefinition of sandfish noun (plural same or sandfishes) 1a small marine fish with fringed lips, which burrows in the sand, in particular: an elongated Australian fish (Crapatulus arenarius, family Leptoscopidae). a North Pacific fish (Trichodon trichodon, family Trichodontidae). 2 (belted sandfish) a small sea bass which lives only in shallow inshore waters around Florida. Serranus subligarius, family Serranidae sandfish in other Oxford dictionaries Definition of sandfish in the US English dictionary