Fishes . Fig. 338.—Death Valley Fish, Emptlrichihys merriami Gilbert. Aiiiargosa Desert,Cal. Family Paciliida. (After Gilbert.) indiscriminately. Fundulus stellifer of the Alabama is beauti-fully colored, as is Fiiiiditlus zebrinns of the Rio Grande. Thegenus Zygonectes includes dwarf species similar to Fundulus,and Adinta includes those with short, deep body. Goodcaatripinnis with tricuspid teeth lives in warm springs in Mexico,. ^^ A- Fic. 329. —Sword-tail Minnow, male, Xiphophorus hcUeri Ileckel. The anal finmodified as an intromittent organ. Vera Cruz. and several species of Goodea, Gambns


Fishes . Fig. 338.—Death Valley Fish, Emptlrichihys merriami Gilbert. Aiiiargosa Desert,Cal. Family Paciliida. (After Gilbert.) indiscriminately. Fundulus stellifer of the Alabama is beauti-fully colored, as is Fiiiiditlus zebrinns of the Rio Grande. Thegenus Zygonectes includes dwarf species similar to Fundulus,and Adinta includes those with short, deep body. Goodcaatripinnis with tricuspid teeth lives in warm springs in Mexico,. ^^ A- Fic. 329. —Sword-tail Minnow, male, Xiphophorus hcUeri Ileckel. The anal finmodified as an intromittent organ. Vera Cruz. and several species of Goodea, Gambnsia, Pcccilia, and othergenera inhabit hot springs of IMexico, Central America, andAfrica. The genus Gambusia, the top-minnows, includes nu-merous species with dwarf males having the anal affinis abounds in all kinds of sluggish water in The Scyphophori, Haplomi, and Xenomi 419 the southern lowlands, gutters and even sewers included. Itbrings forth its brood in early spring. Viviparous and her-bivorous with modified anal are the species of Pcecilia, abundantthroughout Mexico and southward to Brazil; Mollienesia verysimilar, with a banner-like dorsal fin, showily marked, occursfrom Louisiana southward, and Xiphoplioriis, with a sword-shaped lobe on the caudal, abounds in Mexico; Characodon andGoodea in Mexico have notched teeth, and finally, Heterandriacontains some of the least of fishes, the handsomely


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