''Horabagrus nigricollaris'' is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

catfish Catfish (or catfishes; order Siluriformes or Nematognathi) are a diverse group of ray-finned fish. Named for their prominent barbels, which resemble a cat's whiskers, catfish range in size and behavior from the three largest species alive, ...

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...

. It is also known as the "Black collared catfish". It is found only in the

Chalakudy River Chalakudy River or Chalakudy Puzha is the fifth longest river in Kerala, India. The river flows through Thrissur district, Palakkad district and Ernakulam district of Kerala. The total drainage area of the river is 1704 km2. Out of this,1 ...

Kerala Kerala ( ; ) is a state on the Malabar Coast of India. It was formed on 1 November 1956, following the passage of the States Reorganisation Act, by combining Malayalam-speaking regions of the erstwhile regions of Cochin, Malabar, South ...

, India. This species is an inhabitant of hill streams.

Description

''H. nigricollaris'' is sleeker in body shape than ''H. brachysoma'' and can reach a length of TL. This species is less yellow than ''H. brachysoma'' and the black markings extend over the neck, forming a "black collar" (hence the scientific name).

References

Horabagridae Catfish of Asia Endemic fauna of India Freshwater fish of India Environment of Kerala Endangered fish Endangered fauna of Asia Taxa named by Rohan Pethiyagoda Taxa named by Maurice Kottelat Fish described in 1994 {{Siluriformes-stub