. Fresh-water biology. Freshwater biology. Fig. 1542. Rainbow D-drti^r, Et/wostoma cacrulcum Storer, $ . opens just behind the isthmus. The young are carried for a month or two until they have reached a length of 10 mm. In a group of Cyprinodonts reaching as far as Indiana, but increasing in diver- sity of species and numbers of individuals southward, the eggs are retained by the female until the yolk is absorbed by the growing young fish, and sometimes for a much longer period. In the .^. Fig. 1543. Uainhovi D[irtcr, Elhetntomii caerulcum Storer, 9- Actual size, 50 mm. bhnd fishes of Cuba the
. Fresh-water biology. Freshwater biology. Fig. 1542. Rainbow D-drti^r, Et/wostoma cacrulcum Storer, $ . opens just behind the isthmus. The young are carried for a month or two until they have reached a length of 10 mm. In a group of Cyprinodonts reaching as far as Indiana, but increasing in diver- sity of species and numbers of individuals southward, the eggs are retained by the female until the yolk is absorbed by the growing young fish, and sometimes for a much longer period. In the .^. Fig. 1543. Uainhovi D[irtcr, Elhetntomii caerulcum Storer, 9- Actual size, 50 mm. bhnd fishes of Cuba the young are about an inch in length at the time of birth and in the California surf-perch they may be twice as long. Secondary Sexual Characters. — Such features consist in size, disposition, color, or structure. Large differences in all of these are found in the kilHfishes. In some of these species the male is minute and provided with an anal fin modified into a lance-. 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 Ward, Henry Baldwin, 1865-1945; Whipple, George Chandler, 1866-1924. joint author. New York, John Wiley & sons, inc. ; [etc. ,etc. ]
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfreshwa, bookyear1918
