Abstract
Length-weight relationships (LWR) of 14 fish species were estimated from Palito Mountain ridge, upper Tapajos river basin, Brazilian Amazon region. This study represents the first LWR to the small characid Hemigrammus marginatus , and additionally provides new maximum record of length and weight for four and three species, respectively. Keywords: Neotropical freshwater fish fauna; Length-weight relationship; Tapajos river basin; Allometry
Highlights
Length-weight relationships (LWR) of fish species are widely used to estimate weight through given length, and allow comparison between different populations of a same fish species and between different species (found in previous research (FROESE), 2006; GIARRIZZO et al, 2006; JOYEUX et al, 2009)
Length-weight relationships (LWR) of 14 fish species were estimated from Palito Mountain ridge, upper Tapajós river basin, Brazilian Amazon region
Overall 462 specimens belonging to nine families, genera and species were analyzed for LWR (Tables 1)
Summary
Length-weight relationships (LWR) of fish species are widely used to estimate weight through given length, and allow comparison between different populations of a same fish species and between different species (FROESE, 2006; GIARRIZZO et al, 2006; JOYEUX et al, 2009). This study reports the LWR for 14 fish species from Palito Mountain ridge, an area that houses tributaries of the Tapajós river basin in Pará State, northern Brazil. The Tapajós river basin is historically known for its water quality decrease since the beginning of gold mining activities in 1980's decade (ROULET et al, 1998; 2001)
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