Like fresh fish?  Apparently so did the Romans, to such an extent a hydraulic system found on an ancient wreck suggests they must have hauled live fish across the Mediterranean for sale and trade.

Consisting of a pumping system designed to suck the sea water into a fish tank, the apparatus has been reconstructed by a team of Italian researchers who analyzed a unique feature of the wreck: a lead pipe inserted in the hull near the keel.

Roman Ship Carried Live Fish Tank - Rossella Lorenzi, Discovery News

Hull of the second-century Roman shipwreck in 1986, when it was discovered off the coast of Grado in northeastern Italy.   Credit: Ministero per i Beni e le Attivita Culturali, Soprintendenza per i Beni Archeologici del Friuli Venezia Giulia

Discovery News has a slideshow of the hydraulic system here.