Sturgeon. For the living species, see Ichthyology; for the fossil species, see the Ganoid fishes of Agassiz.

ACI REALE, a city on the coast of Catania, at the base of Etna. It is well built, clean, and healthy, with a delicious climate. Pop. about 15,000: they are industrious, and carry on a considerable trade in the wines of the adjacent fertile territory, fruit, cotton, flax, linen, silk, cutlery, and jewellery. Several small contiguous towns also bear the name of Aci; as Aci Castello, Aci Terra, Aci Santa Lucia, &c.