Statistics for occurrence #1 of “Altino” in book 1, chapter 4, section 11 of Vitruvius Pollio, The Ten Books on Architecture:
...reatures, while any that swim down from the higher levels to the shore are killed at once by the saltness to which they are unused. An instance of this may be found in the Gallic marshes surrounding Altino , Ravenna, Aquileia, and other towns in places of the kind, close by marshes. They are marvellously healthy, for the reasons which I have given.
...