On the rocks in Ceylon which are washed by the surf there are quantities of the curious little fish, _Salarius alticus_[1], which possesses the faculty of darting along the surface of the water, and running up the wet stones, with the utmost ease and rapidity. By aid of the pectoral and ventral fins and gill-cases, they move across the damp sand, ascend the roots of the mangroves, and climb up the smooth face of the rocks in search of flies; adhering so securely as not to be detached by repeated assaults of the waves. These little creatures are so nimble, that it is almost impossible to lay hold of them, as they scramble to the edge, and plunge into the sea on the slightest attempt to molest them. They are from three to four inches in length, and of a dark brown colour, almost undistinguishable from the rocks they frequent. [Footnote 1: Cuv. and VALEN., _Hist. Nat. des Poissons_, tom. xi. p. 249. It is identical with _S. tridactylus,_ Schn.] But the most striking to the eye of a stranger are those fishes whose brilliancy of colouring has won for them the wonder even of the listless Singhalese. Some, like the Red Sea Perch (_Holocentrum rubrum_, Forsk) and the Great Fire Fish[1], are of the deepest scarlet and flame colour; in others purple predominates, as in the _Serranus flavo-cæruleus_; in others yellow, as in the _Choetodon Brownriggii_[2], and _Acanthurus vittatus_, of Bennett[3], and numbers, from the lustrous green of their scales, have obtained from the natives the appropriate name of _Giraway_, or _parrots_, of which one, the _Sparus Hardwickii_ of Bennett, is called the "Flower Parrot," from its exquisite colouring, being barred with irregular bands of blue, crimson, and purple, green, yellow, and grey, and crossed by perpendicular stripes of black. [Footnote 1: _Pterois muricata_, Cuv. and Val. iv. 363. _Scarpæna miles_, Bennett; named, by the Singhalese, "_Maharata-gini_," the Great Red Fire, a very brilliant red species spotted with black. It is very voracious, and is regarded on some parts of the coast as edible, while on others it is rejected.] [Footnote 2: _Glyphisodon Brownriggii_, Cuv. and Val. v. 484; _Choetodon Brownriggii_, Bennett. A very small fish about two inches long, called _Kaha hartikyha_ by the natives. It is distinct from Choetodon, in which BENNETT placed it. Numerous species of this genus are scattered throughout the Indian Ocean. It derives its name from the fine hair-like character of its teeth. They are found chiefly among coral reefs, and, though eaten, are not much esteemed. In the French colonies they are called "Chauffe-soleil." One species is found on the shores of the New World (_G. saxatalis_), and it is curious that Messrs. QUOY and GAIMARD found this fish at the Cape de Verde Islands in 1827.]