The African lung fish, Protopterus annectens from Agenebode, in the
Lower River Niger was investigated for aspects of its biology. Samples of the
fish were collected from October 2016 to November 2017. Sex ratio of 1:1.4
(male to females) was obtained from the river. The results from the stomach
analyses revealed that P. annectens consumed mud, detritus and sand
(100%). Bird’s foot was regarded as incident diet (0.01%) while grass was
also observed to be part of the relevant diet (7.1%) of the fish, an indication
that it is an omnivore. The Gonadosomatic Index (GSI) ranged from 12.34 to
13.33. The peak of GSI were observed during