The Merdosians were a sentient race from the Gamma Quadrant world of Merdosia. Merdosians have a belief that the tongue of a person who lies will change color and thus Merdosians have transparent teeth implanted early in childhood to make showing their tongues easier.
In 2371, six days after the Battle of the Omarion Nebula, Allo Glessin was rescued by a Merdosian salvage vessel. The Merdosian individual Pri'ak was a member of the Even Odds. (DS9 novels: Rising Son, Sacraments of Fire)