Silver Carp are deep-bodied, or wide, with a moderately large and broad head encompassing just under one third of their body size. They have a toothless upturned lower jaw and eyes are located below the axis of the body. Their body is silver with a slate gray head and dorsal surface and white belly with a keel extending from the anal fin to the throat. They are closely related to Bighead Carp and have been known to hybridize (cross-breed) with that species and produce viable, reproductive offspring.