Faunal (vertebrate) Biodiversity

Species richness for the different classes of vertebrates in sikkim are

Groups	Species Richness	Comments
Fish	48	9 families, genera, many of commercial importance
Amphibians	16	preliminary checklist only
Reptiles	26	preliminary checklist only
Birds	550	26 threatened ( Birdlife International),9 of unknown distribution
Mammals	144	39 rare or endangered( Schedule 1 Indian Wildlife Protection Act,1991).

The butterfly species with known distributional ranges within sikkim belongs
to five families. At present, 25 species of butterflies of Sikkim Himalaya have been listed in the high conservation priority Schedule I of the indian Wildlife (Protection) Act amended up to 1991 and another 300 species in Schedule II category.

• Butterflies of Sikkim with known sites of distribution
• Important Fish Fauna of Sikkim
• A Preliminary check list of Amphibeans in Sikkim
• A Preliminary check list of Reptiles in Sikkim
• Threatend birds of Sikkim
• Rare and Threatend Mammal species used in the ERBC analysis

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