Genus Koima

About Genus Koima:

• The generic name, Koima is derived from Malayalam and is the vernacular word used for loaches.
• It encompasses two known species that were previously assigned under the genus Nemacheilus.
• Features of genus Koima
  • It has a unique colour pattern comprising a yellowish-brown ground colour, single row of black spots on lateral line, all fins hyaline, and absence of a uniform banding pattern on dorsal side.
• Habitat: Kunthi, Bhavani, Moyar, Kabini, and Pambar rivers in the Western Ghats.

Species belongs to Genus koima

• Koima remadevii
  • It typically inhabits swift-flowing riparian streams with substrates comprising rocks, boulders, and gravel, with sand and silt patches scattered throughout.
  • Koima remadevii thrives in fast-flowing streams with rocky substrates. These fish seek shelter in the gaps between rocks and beneath boulders, finding protection from strong currents.
  • Currently it is only known from its type locality in the Kunthi river inside Silent Valley National Park.
• Koima monilis: It inhabits various tributaries of the Cauvery river, occupying microhabitats ranging from large rivers to small, fast-flowing streams at elevations between 350 and 800 m. 

Q1: What is a microhabitat?

It refers to a small-scale environment that supports a distinct flora and fauna, ranging from tree hollows to larger areas, and is selected based on the specific needs and thermal requirements of the target species.

News: A new genus of freshwater fish discovered in Western Ghats

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