Algansea monticola, a new cyprinid fish from the Pacific slope of Central Mexico

" During the summer of 1963, eight series totaling 630 specimens of an undescribed cyprinid were taken by us from the headwaters of the Rio Colotlan and the Rio Juchipila, northern tributaries to the Rio Grande de Santiago on the Pacific slope of the states of Zacatecas and Jalisco. Subsequent study revealed it to be a member of the genus Algansea, a small group widely distributed in the Lerma-Santiago river system and contiguous waters "