Elements of comparative zoology (1904) Elements of comparative zoology elementsofcompar1904king Year: 1904 FISHES. 329 their voracity, and have been termed 'mere machines for the assimilation of other organisms.' Among the marine members of the order are the her- ring (fig. 128), shad, menhaden, fishes of great importance to man, both as food and for the oil and fertilizers which FIG. 128.—Herring (Clupea harengus). are made from them. They occur in large schools, and afford food for numerous predaceous fishes. Differing from the forms already mentioned are those V which may be grouped tog
Elements of comparative zoology (1904) Elements of comparative zoology elementsofcompar1904king Year: 1904 FISHES. 329 their voracity, and have been termed 'mere machines for the assimilation of other organisms.' Among the marine members of the order are the her- ring (fig. 128), shad, menhaden, fishes of great importance to man, both as food and for the oil and fertilizers which FIG. 128.—Herring (Clupea harengus). are made from them. They occur in large schools, and afford food for numerous predaceous fishes. Differing from the forms already mentioned are those V which may be grouped together as eels, fishes with elongate bodies and without ventral fins. Most of the species are marine, and those which live in fresh water go to the sea to spawn. All are voracious creatures, and one South American species has marked electrical powers. ORDER II.—ANACANTHINI. These have the gills comb-like (p. 327); the dorsal, anal, and ventral fins without spines; the ventral fins, when present, placed far forward between the pectorals; the swim-bladder without connection with the gullet; and the scales either ctenoid or cycloid. Mostly marine. J •/ But few of these forms need mention. Most important of all are the cod (fig. 129) and haddock, which stand beyond all others as food-fishes. They occur in the north-
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