Gnathonemus longibarbis 

 Barbels 



Function 

 Courtship 

 Gnathonemus moon 

 Electric organs 

 Electrical senses 



Experimental analysis 



Metencephalon 



Anatomy 



Histology 



Gnathonemus niger 



Electric organs 



Electrical sensitivity 

 Experimental analysis 

 Gnathonemus peters/ 

 Electric organs 

 Enzymology 

 Ultrastructure 

 Metencephalon 

 Anatomy 

 Histology 



Function 



Histology 



Ultrastructure 

 Electrical sensitivity 

 Metencephalon 



Experimental analysis 

 Electroreception organs 

 Function 



Experimental analysis 

 Monogenea 



Parasite systematics 

 CNS integration 

 Electric organs 



Nervous electrophysiology 

 Electroreception organs 

 Nervous electrophysiology 

 Gnathonemus victoriae 

 Barbels 



Function 

 Courtship 

 Hyperopisus occidental is 

 Skull 



Anatomy 

 Oral teeth 

 Anatomy 

 Marcusenius 



Redefinition 

 Marcusenius grahami 

 Shelter construction 

 Courtship 

 Nest construction 

 Marcusenius isidori 



Synonymy 

 Marcusenius kingsleyae 



Meristics 

 Marcusenius longianalis 



General structure and behavior 

 Monnyrops anguiiloides 

 Skull 



Infraorbital bones 

 Anatomy 



Descriptive evolution 

 Mormyrops deh'ciosus 



Caudal skeleton 

 Mormyrus 



Seasonal abundance 

 Mormyrus caballus 



Synonymy 

 Mormyrus macrops 

 Skull 



Infraorbital bones 

 Anatomy 



Descriptive evolution 

 Mormyrus ovis 



Visceral skeletal muscles 

 Mormyrus rume 

 Labyrinth 

 Anatomy 

 PetrocephaJus 

 Relationships 

 Redefinition 

 Electroreception organs 



Function 

 Egg size 

 PetrocephaJus bane 

 Scales 



804000 

 806094 



805244 



806095 

 806096 



805227 

 806472 

 805243 



805457 



805457 



805457 



808972 

 808972 

 808972 



805573 



808019 



806535 



807160 

 807160 

 808973 

 805573 



807160 

 807160 



Axial skeleton 



Anatomy 

 Visceral skeleton 



Anatomy 

 SkuU 



Anatomy 

 Otoliths 

 Petrocephalus bovei 

 Metencephalon 



Anatomy 

 Histology 



Function 



Petrocephalus catostoma 



Short term adaptive color change 



Fecundity 



Larva 



Vertical distribution 



Larva 

 Shelter construction 

 Nest construction 

 Petrocephalus microphthalmus 



Validation 

 Stoma torhin us humiiior 

 Skull 



Infraorbital bones 

 Anatomy 



Descriptive evolution 

 Notopteridae 

 Relationships 

 Meristics 

 Skull 



Infraorbital bones 

 Anatomy 



Descriptive evolution 

 Lateral line pores and canals 

 Gas bladder 



Use in systematics 

 Anatomy 

 Zoogeography 

 Notopterus chitaJa 

 Skull 



Infraorbital bones 

 Anatomy 



Descriptive evolution 

 Visceral skeletal muscles 

 Lateral line pores and canals 

 Gut contents 

 Notopterus notopterus 

 Relationships 

 Synonymy 

 Mouth 

 Histology 

 Biochemistry 

 Enzymology 

 Visceral skeleton 



Anatomy 

 Skull 



Anatomy 



Descriptive evolution 

 Infraorbital bones 

 Anatomy 



Descriptive evolution 

 Brain 



Anatomy 



Function 

 Lipid and fatty acid content 

 Histology 

 Biochemistry 

 Sense organs 

 Anatomy 

 Function 

 Cranial nerves 



Anatomy 

 Glossopharyngeal nerve 



Anatomy 

 Vagus nerve 

 Anatomy 

 Lateral line pores and canals 

 Neurosecretion in brain 



Biochemistry 

 Neurohypophysis 

 Anatomy 

 Histology 

 Adenohypophysis 

 Anatomy 

 Histology 

 Erythrocytes 

 Headkidney 

 Development 



Mormyridae 

 (continued) 



Notopteridae 



806095 

 806096 

 806095 

 806096 



808972 



808970 

 808972 

 808972 



807160 

 807160 



807160 

 807160 

 807160 

 806966 



804141 

 804747 



387 



