The Odessa barb (Pethia padamya) is a species of cyprinid fish known from Central Myanmar, where it is known to occur in an artificial pond above the Anisakan Falls and also from the lower Chindwin River.

The male has a beige to light brown background color, but is noted for the bright red stripe running the length of the body.

The dorsal, anal, and pelvic fins of the male are yellowish green in color, with contrasting black spots.

The genus name Pethia refers to a group of small sized barbs present predominantly in South and Southeast Asia.

The Odessa barb can be kept with other peaceful fish species including various Tetras, various Corydoras catfish, danios, and the Ram cichlid.