Travancoria is a small genus of hillstream loaches native to the Western Ghats of southern India, a biodiversity hotspot whose name it shares with the historic Travancore region. The atlas's two species, Travancoria elongata and Travancoria jonesi (the Travancore loach), range from about 1–3.5 in and, like other hillstream loaches, have a flattened body and broadened paired fins that act almost as suckers, letting them cling to rock surfaces in fast, highly oxygenated stream current rather than being swept downstream.
Travancoria jonesi turns up occasionally in the specialist hillstream-loach hobby, where its flattened profile and clinging behavior are the main draw; keepers generally replicate strong current, cool well-oxygenated water, and algae-covered rock or wood surfaces for it to graze. Travancoria elongata is far less documented and essentially absent from the trade. One species has not yet been formally IUCN-assessed and the other is listed as Endangered, reflecting the vulnerability of Western Ghats stream endemics to habitat degradation.