Morphometric relationships of African big barb, Labeobarbus intermedius (Rppell, 1836) in Lake Koka, Ethiopia

Abstract

Morphometric relationships of African big barb, Labeobarbus intermedius (Ruppell, 1836) (Pisces: Cyprinidae) in Lake Koka, Ethiopia was studied based on the total number of 266 adult fish samples collected in April-May and July-August 2011. Fish ranging from 23.3 to 49.0 cm in total length (35±4.1 cm) and from 95.4 to 1200 g in total weight (434.4±206.5 g) were randomly sampled. Of these, 55.6% (n=148) were males and 44.4% (n=118) were females. The length-weight relationship of the males, females and combined fish were curvilinear and statistically significant (P 0.01). Length-length relationships between total length (TL) and fork length (FL), fork length (FL) and standard length (SL), TL and SL were linear and statistically significant (P 0.01). The overall condition factor for all sampling period was 1.0.   Key words: Allometric growth, Labeobarbus intermedius, condition factor, Lake Koka, length-weight relationship.