Carlos Humberto Ruiz Gutiérrez, initially nicknamed El Pescadito but gradually known as just Pescado or "Fish", is a Guatemalan footballer who currently plays for D.C. United in the Major League Soccer.
A product of CSD Municipal's "cantera", Ruiz has also played for four Major League Soccer clubs, scoring 87 goals in 168 MLS regular season matches and 16 goals in the post-season, which is the record for the most post-season goals in MLS history. In 2002, he was named the MLS' Most Valuable Player of the season.
Ruiz was also been a member of the Guatemalan national team beginning in 1998, later becoming its captain and all-time top scorer, and being part of four World Cup qualification processes. As of 2012 he has retired from international play.