The Barbels are closely allied to the carps, and are easily known by the barbs or beards which hang from their lips. Like the sheat-fishes, the Barbels are fond of grubbing in the mud, for the purpose of getting at the worms, grubs, and larvæ of aquatic insects that are always to be found in such places. The Barbels are rather long in proportion to their depth, a peculiarity which, owing to the length of the head, is rather exaggerated in this species. The Long-headed Barbel is extremely common in Palestine, and may be taken with the very simplest kind of net. Indeed, in some places, the fish are so numerous that a common sack answers nearly as well as a net. It has been mentioned that the ancient Romans were in the habit of forming ponds in which the Murænæ were kept, and it is evident, from several passages of Scripture, that the Jews were accustomed to preserve fish in a similar manner, though they would not restrict their tanks or ponds to one species. The accompanying illustration represents Fishes of the Mediterranean Sea, and it is probable that one of them may be identified, though the passage in which it is mentioned is only an inferential one. In the prophecy against Pharaoh, king of Egypt, the prophet Ezekiel writes as follows: "I will put hooks in thy jaws, and I will cause the fish of thy rivers to stick unto thy scales, and I will bring thee up out of the midst of thy rivers, and all the fish of thy rivers shall stick unto thy scales" (xxix. 4). [Illustration: FISHES OF THE MEDITERRANEAN. 1. SUCKING-FISH. 2. TUNNY. 3. CORYPHENE.] Some believe that the prophet made allusion to the Sucking-fish, which has the dorsal fins developed into a most curious apparatus of adhesion, by means of which it can fasten itself at will to any smooth object, and hold so tightly to it that it can scarcely be torn away without injury. The common Sucking-fish is shown in the upper part of the illustration. There are, however, other fish which have powers of adhesion which, although not so remarkable as those of the Sucking-fish, are yet very strong. There is, for example, the well-known Lump-sucker, or Lump-fish, which has the ventral fins modified into a sucker so powerful that, when one of these fishes has been put into a pail of water, it has attached itself so firmly to the bottom of the vessel that when lifted by the tail it raised the pail, together with several gallons of water. The Gobies, again, have their ventral fins united and modified into a single sucker, by means of which the fish is able to secure itself to a stone, rock, or indeed any tolerably smooth surface. These fishes are popularly known as Bull-routs.