 Children (4 direct children, 5 direct and indirect children):
    
    
        
        Children (4 direct children, 5 direct and indirect children):
        
        
        
            
                Murray cod
                
                    (tree size 1)
                
                
                    Murray river cod
                
                
            
                Trout cod
                
                
                    Maccullochella macquariensis
                
                
            
                Eastern freshwater cod
                
                
                    Maccullochella ikei
                
                
            
                Mary river cod
                
                
                    Maccullochella mariensis