The speckled chub (Macrhybopsis aestivalis) is a species of freshwater fish in the family Cyprinidae of the order Cypriniformes, which also includes carps, suckers, and loaches.

[3] Speckled chubs have a slender, compressed body that is usually a yellowish tan to silver in color and may or may not have dark markings present.

[4] Speckled chubs use the taste buds located on the head, body, and fins to find the aquatic insects they feed on.

The speckled chub population has declined in the lower Rio Grande due to reservoirs, channelization, and reduced stream flows associated with irrigation.

the "aestivalis" part of the name is translated to pertain to summer, which is referring to the long spawning season of the speckled chub.