. Fishes. Fishes. Series Ostariophysi 38 these fish are called), and torn to pieces before it can be with- drawn from the water. The caribes themselves are rarely hooked, as they snap the hook or cut the line. The smell of blood is said to attract at once thousands of these fishes to the ; Two families of Heterognathi are recognized: the Erythri- nidcB, which lack the adipose fin, and the Characidcs, in which this fin is developed. The Erythrinidce are large pike-like fishes of the South American. rivers, robust and tenacious of life, with large mouths armed with strong unequal teeth
. Fishes. Fishes. Series Ostariophysi 38 these fish are called), and torn to pieces before it can be with- drawn from the water. The caribes themselves are rarely hooked, as they snap the hook or cut the line. The smell of blood is said to attract at once thousands of these fishes to the ; Two families of Heterognathi are recognized: the Erythri- nidcB, which lack the adipose fin, and the Characidcs, in which this fin is developed. The Erythrinidce are large pike-like fishes of the South American. rivers, robust and tenacious of life, with large mouths armed with strong unequal teeth. The best-known species is the Trahira {Hoplias malabaricus). Among the Characidaz, Serrasalmo has been already noticed. Ciiharinus in Africa has very few teeth, and Curimatiis in South America none at all. Nannocharax in Africa is composed of. Fig. 290.—Brycon dentrx Gunther. Family Choracidce. Nicaragua. very diminutive fishes, Hydrocyon exceedingly voracious ones, reaching a length of four feet, with savage teeth. Many of the species are allies of Tetragonoptents, small, silvery, bream-like fishes with fiat bodies and serrated incisor teeth. Most of these are American. A related genus is Brycon, found in the streams about the Isthmus of Panama. Extinct Characins are very rare. Two species from the Ter- tiary lignite of Sao Paulo, Brazil, have been referred to Tetra- gonopterus—T. avus and T. ligniticus. The Eventognathi.—The Eventognathi (ev, well; er, within; yvddos, jaw) are characterized by the absence of teeth in the jaws and by the high degree of specialization of the lower phar-. 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. New York, H. Holt and Company
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