. A textbook in general zoology. Zoology. FISHES 216 look after its eggs. The young fish live upon crustaceans and small worms, but, in turn, may be eaten by larger fish. Some fish scoop rude nests out in the gravel in which to deposit their eggs and then stand guard over them to pro- tect them. The stickleback builds quite an elaborate nest for its eggs and the male assiduously cares for them. Other of this Class Sharks, rays, sawfish, etc. —These examples are repre- sentatives of the lowest order of fishes. The sharks are. Fig. 151. — Hammer-headed shark. Note the five gill slits
. A textbook in general zoology. Zoology. FISHES 216 look after its eggs. The young fish live upon crustaceans and small worms, but, in turn, may be eaten by larger fish. Some fish scoop rude nests out in the gravel in which to deposit their eggs and then stand guard over them to pro- tect them. The stickleback builds quite an elaborate nest for its eggs and the male assiduously cares for them. Other of this Class Sharks, rays, sawfish, etc. —These examples are repre- sentatives of the lowest order of fishes. The sharks are. Fig. 151. — Hammer-headed shark. Note the five gill slits in the side of the neck. the lowest in development of the fishes. At the same time, they are the fiercest animals of the sea. In some sharks the body is protected by spiny processes, and in others the body has no protection at all; but very few animals dare to attack them. In general, the skeleton is cartilaginous, with no distinct bones as in the higher. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Herrick, Glenn W. (Glenn Washington), 1870-1965. New York, Cincinnati [etc. ] American Book Company
Size: 2027px × 1233px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectzoology, bookyear1912
