Show it poor in albe ll be the colorado basin is the largest in the united states draining not less than two hundred and twenty five thousand square miles yet according to a paper prepared for the united states fish commission by everman and rutter it contains but thirty two species of fish of eighteen genera these belong to ali e following five families or suckers ciet species or minnows nineteen or trout and whitefish two or top minnows two and or blobs one all but seven of the species are thus far known only from this basin in comparison it is stated that eighty different species are known from the basin of the rio grande one hundred and forty from that of the missouri and one hundred and thirty from the wabash basin |