Lewis & Short

saxātĭlis, e, adj. [saxum], that dwells or is found among rocks, saxatile: columbae, i. e. which inhabit towers, Varr. R. R. 3, 7, 1: pisces, that frequent rocks, Col. 8, 16, 8: piscatus (opp. hamatilis), Plaut. Rud. 2, 1, 10.
As subst.: saxātĭles, fishes that frequent rocks, Cels. 2, 18; Plin. 9, 15, 20, § 52; 32, 9, 31, § 94; Ov. Hal. 109.