''Pethia didi'' is a

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

cyprinid Cyprinidae is a Family (biology), family of freshwater fish commonly called the carp or minnow family, including the carps, the true minnows, and their relatives the barb (fish), barbs and barbel (fish), barbels, among others. Cyprinidae is the ...

fish which has only been recorded in the vicinity of

Myitkyina Myitkyina (, ; Jingpho language, Jinghpaw: ''Myitkyina'', ; , ''Sèna'') is the capital city of Kachin State in Myanmar (Burma), located from Yangon, and from Mandalay. In Burmese language, Burmese it means "near the big river", and Myitkyina i ...

and

Indawgyi Lake Indawgyi Lake ( ) is one of the largest inland lakes in Southeast Asia. It is located in Mohnyin Township in the Kachin State of Myanmar. The lake measures east to west, and north to south. There are over 20 villages around the lake. The predom ...

in the north of

Myanmar Myanmar, officially the Republic of the Union of Myanmar; and also referred to as Burma (the official English name until 1989), is a country in northwest Southeast Asia. It is the largest country by area in Mainland Southeast Asia and has ...

. This is a small fish which can reach a length of SL. It is generally brownish with a dark vertical bar just behind the operculum and a round dark blotch on the

caudal peduncle Fins are moving appendages protruding from the body of fish that interact with water to generate thrust and help the fish swim. Apart from the tail or caudal fin, fish fins have no direct connection with the back bone and are supported only ...

. The species '' P. tiantian'' – with a range close to ''P. didi'' – is similarly marked, but ''P. didi'' can be distinguished by its truncated

lateral line The lateral line, also called the lateral line organ (LLO), is a system of sensory organs found in fish, used to detect movement, vibration, and pressure gradients in the surrounding water. The sensory ability is achieved via modified epithelia ...

, deeper body and longer

dorsal fin A dorsal fin is a fin on the back of most marine and freshwater vertebrates. Dorsal fins have evolved independently several times through convergent evolution adapting to marine environments, so the fins are not all homologous. They are found ...

, with two rows of dark markings rather than one.

References

didi Didi Chuxing Technology Company is a Chinese vehicle for hire company headquartered in Beijing with over 550 million users and tens of millions of drivers. The company provides app-based transportation services, including taxi hailing, private ...

Fish described in 2005 Barbs (fish) {{Barbinae-stub