Sensory system  
Mouth  
Barbels (2 pairs) ¹  
Nostrils (2 pairs) ¹  
Eye  
Cephalic sensory pores ¹  
Lateral line  

  Respiratory system  
Operculum  

  Locomotor system  
Pectoral fin  
Pelvic fin  
Dorsal fin  
Anal fin  
Caudal fin  

  Excretory &
  reproductive system  
Anus  
Urogenital papilla  

None 

    _{1: unclear/indistinguishable
    2: not visible}  

  Digestive system  
Pharyngeal bones & teeth ²  
Liver  
Gall bladder ²  
Intestines  
Anus ¹  

  Locomotor system  
Swim bladder  

  Cardiovascular system  
Heart  

  Respiratory system  
Gills (4 pairs of arches)  

  Lymphatic system  
Spleen ²  

  Excretory system  
Head kidney  
Ventral lobe of kidney  

  Reproductive system  
Testes  
Urogenital papilla ¹  

None 

    _{1: unclear/indistinguishable
    2: not visible}  

  Digestive system  
Pharyngeal bones & teeth  
Liver  
Gall bladder ²  
Intestines  
Anus ¹  

  Locomotor system  
Swim bladder  

  Cardiovascular system  
Heart  

  Respiratory system  
Gills (4 pairs of arches)  

  Lymphatic system  
Spleen  

  Excretory system  
Head kidney  
Ventral lobe of kidney  

  Reproductive system  
Testes  
Urogenital papilla ¹  

None 

    _{1: unclear/indistinguishable
    2: not visible}