The Calondon was a Kressari freighter that was in service in the late 24th century.
In 2370, while carrying sensitive herbaceous DNA materials, the Calondon docked at Deep Space 9. The ship's cargo was thoroughly searched by DS9 personnel for six hours, which made the freighter's captain, Zef'No, threaten a formal protest by the Kressari government. The ship was then allowed to leave, but Odo had secretly stowed away onboard. The Calondon then met with the Cardassians and received weapons from them to transport those to the Alliance for Global Unity on Bajor, with the transfer being observed by Odo. (DS9: "The Circle")
For more information on this studio model, see TNG studio models.