Figure 4
Lateral views of skeleton of the generalized percomorph Lates (a), the anabantoid Ctenopoma (b), the aenigmachannid Aenigmachanna (c) and the channid Parachanna (d). Green arrow marks position of vent, red arrow position of first caudal vertebra (anterior most vertebra with haemal spine). Note more or less equal separation of vertebral column in Lates (a) and Ctenopoma (b) into abdominal and caudal vertebrae (a,b,d adapted from33) with position of vent and first caudal vertebra close to each other and caudal and postanal region of vertebral column of similar length. Note partial abdominalisation of postanal vertebral column in Aenigmachanna and almost complete abdominalisation in Parachanna.
