. Animal studies. THE FISHES 173 the touch. The herring and shad are examples, as also the salmon and trout. Some live in the great depths of the sea, even five miles below the surface. These are very soft in body, being nnder tremendous pressure. They are inky black—for the sea at that depth seems black as ink—and most of them have luminous spots which give them light in the darkness. Some species have the forehead luminous, like the headlight of an engine. Most of these deep-sea fishes are very voracious, for there is nothing for them to feed on save their neighbors. 166. The pike, stickleba
. Animal studies. THE FISHES 173 the touch. The herring and shad are examples, as also the salmon and trout. Some live in the great depths of the sea, even five miles below the surface. These are very soft in body, being nnder tremendous pressure. They are inky black—for the sea at that depth seems black as ink—and most of them have luminous spots which give them light in the darkness. Some species have the forehead luminous, like the headlight of an engine. Most of these deep-sea fishes are very voracious, for there is nothing for them to feed on save their neighbors. 166. The pike, sticklebacks, etc.—Several small orders stand between these soft-rayed, smooth-scaled fishes and. C W Fig. 104— The blindfish and its parentage. A, Dismal Swamp fish (Chologaster avitns), the ancestor of (B) Agassiz's cave fish {Chologaster agassizi) and (C) cave blindfish (Typhlichthys subterraneus). the form, like the perch and bass, which has many spines in the dorsal fin. Among these transitional forms is the pike (Fig. 105) —long, slender, circumspect, and voracious, lying in wait under a lily-pad; the blindfish, which lost its eyes through long living in the streams of the great caves; the stickleback, small, wiry, malicious, and destructive, steal- ing the eggs and nibbling the fins of any larger fish; the sea-horse, often clinging with its tail to floating. 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 Jordan, David Starr, 1851-1931; Kellogg, Vernon L. [from old catalog].
Size: 1720px × 1452px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorjordanda, bookcentury1900, bookdecade1900, bookyear1903
