Labels:text | font | screenshot | black and white | white OCR: temperature may also rise, reducing the amount of free oxygen held in the water. Desert fish are adapted to cope with these conditions. The 2 inch-long topminnow prefers springs and streams and lives around the southern Colorado river drainage area. Topminnows belong to the livebearing family Poeciliidae, found only in warmer parts of the Americas. Topminnows are more elongated than pupfish and are the only native fish in Arizona that give birth to live young. This fish was once common but was added to the endangered species list in 1967
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