Length-weight relationship and condition factor of the African lungfish, Protopterus annectens (Owen, 1839) from Orashi and Sombreiro Rivers, Niger Delta, Nigeria

Abstract

The length-weight relationship and condition factor of two hundred and seventy-one samples of Protopterus annectens (Owen, 1839) from Orashi and Sombreiro Rivers were investigated. The length-weight relationship calculated for the species gave an average “b” value of 1.0943 which is an indication of negative allometric growth. The fish attained an average length of 44.7 cm and weight of 150.2 g. The Condition factor varied from 0.10 to 0.19 with a mean of 0.15±0.02. This result showed that the rivers provide nourishable environment for the well-being of the fish.

Keywords: Length-weight relationship, well-being, negative allometric, Protopterus annectens