fluminalis
From LSJ
γνοίης ὅσσον ὄνων κρέσσονες ἡμίονοι → you know how much better are donkeys from mules
γνοίης ὅσσον ὄνων κρέσσονες ἡμίονοι → you know how much better are donkeys from mules
flūmĭnālis: e, adj. id.,
I of or belonging to a river, river- (late Lat.): navigatio, Cael. Aur. Tard. 1, 1, 44: cancri, river crawfish, id. ib. 1, 4, 119.
flūmĭnālis, e, c. flumineus : C. Aur. Chron. 1, 1, 44.