Abstract
The present study deals with the species diversity of fishes in Manimala River with reference to Eraviperoor region, Pathanamthitta, Kerala, India. The Manimala River forms the northern and north-western boundary and Varattar (a branch of river Pamba) forms the southern boundary of the study area. The wetlands (mainly paddy fields) consist of 18 small to medium-sized water bodies functioning as a water source for agriculture. A chain of canals connects many of them in the lower areas while the remaining ones get interconnected during monsoon floods during which the movement of fishes from rivers to other water bodies takes place. These small water bodies are extremely significant for the preservation and sustenance of the biodiversity of fishes. 24 species belonging to 12 families and 5 orders were collected and identified. This includes10 species from the family Cyprinidae, 3 species from the family Channidae, 2 species from family Cichlidae, and 1 species each from families Hemiramphidae, Belonidae, Anabantidae, Osphronemidae, Heteropneustidae, Claridae, Siluridae, Tetraodontidae, and Ambassidae.
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