Length-weight relationship of Atlantirivulus santensis in natural and artificial temporary habitats in the Atlantic Forest

Abstract

The length-weight relationship in fish is widely used to describe growth patterns and assess individual body condition, highlighting variations related to environment, sex, life stage, or diet. In this study, we investigated the length-weight relationship of male and female Atlantirivulus santensis from temporary pools and roadside ditches. The species exhibited allometric growth with no differences between sexes, but with environmental influence for females: positive allometry in ditches and negative in pools. The results indicate growth plasticity in response to environmental conditions.