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• 
  Species:
  Hypancistrus sp. (L201)
  
  Caption: "Big spot" L201, male with opercular odontodes
• 
  Species:
  Scobinancistrus aureatus
  
  Caption: Body of male showing odontodes
• 
  Species:
  Ancistomus sp. (L147)
  
  Caption: Close up of a male and his cheek odontodes
• 
  Species:
  Leporacanthicus cf. galaxias(l241)
  
  Caption: Close-up of body odontodes
• 
  Species:
  Nannoptopoma sp. (LDA110)
  
  Caption: Close-up of body odontodes
• 
  Species:
  Hypancistrus vandragti
  
  Caption: Close-up of head and opercular odontodes
• 
  Species:
  Parancistrus aurantiacus
  
  Caption: Close-up of interopercular and pectoral odontodes
• 
  Species:
  Farlowella vittata
  
  Caption: Close-up of male rostrum showing odontodes
• 
  Species:
  Peckoltia sp. `RIO TOCANTINS`
  
  Caption: Close-up of male showing posterior odontodes
• 
  Species:
  Panaqolus albivermis
  
  Caption: Close-up of male's odontodes
• 
  Species:
  Peckoltia sabaji
  
  Caption: Close-up of odontodes
• 
  Species:
  Acanthicus hystrix
  
  Caption: Close-up of odontodes. Rio Tocantins, near town of Estreito, Maranhão state, Brazil
• 
  Species:
  Scobinancistrus aureatus
  
  Caption: Close-up of opercular odontodes
• 
  Species:
  Acanthicus hystrix
  
  Caption: Close-up of opercular odontodes. Rio Tocantins, near town of Estreito, Maranhão state, Brazil
• 
  Species:
  Hypostomus pyrineusi
  
  Caption: Close-up of pectoral odontodes
• 
  Species:
  Pseudacanthicus pirarara
  
  Caption: Close-up of pectoral odontodes
• 
  Species:
  Pseudacanthicus pirarara
  
  Caption: Female - close-up of body odontodes
• 
  Species:
  Pseudacanthicus pirarara
  
  Caption: Female - close-up of pectoral odontodes
• 
  Species:
  Scobinancistrus aureatus
  
  Caption: Female body showing absence of odontodes
• 
  Species:
  Leporacanthicus cf. galaxias(l241)
  
  Caption: Female pectoral fin (smaller odontodes)
• 
  Species:
  Rineloricaria heteroptera
  
  Caption: Female. Sex-dimorphic pectoral spine & odontodes
• 
  Species:
  Ancistomus sp. (L147)
  
  Caption: Females cheek odontodes
• 
  Species:
  Corumbataia acanthodela
  
  Caption: Hypertrophied odontodes on head of male
• 
  Species:
  Farlowella vittata
  
  Caption: Male illustrating odontodes on rostrum
• 
  Species:
  Peckoltia vittata
  
  Caption: Male on top clearly showing the body odontodes
• 
  Species:
  Peckoltia sp. (L080)
  
  Caption: Male showing odontodes
• 
  Species:
  Hypancistrus sp. (L260)
  
  Caption: Male with erect odontodes
• 
  Species:
  Hemiancistrus guahiborum
  
  Caption: Male, showing pectoral odontodes
• 
  Species:
  Rineloricaria heteroptera
  
  Caption: Male. Sex-dimorphic pectoral spine & odontodes
• 
  Species:
  Panaque suttonorum
  
  Caption: Maracaibo basin; Close-up of odontodes
• 
  Species:
  Pseudancistrus sp. (L491)
  
  Caption: Odontodes
• 
  Species:
  Chaetostoma orientale
  
  Caption: Odontodes on male's anal fin
• 
  Species:
  Rineloricaria eigenmanni
  
  Caption: Odontodes on male's head, cheeks & pectoral fins
• 
  Species:
  Panaque cf. cochliodon`upper magdalena`
  
  Caption: Pectoral odontodes
• 
  Species:
  Panaque armbrusteri
  
  Caption: Rio Jamanxim close-up of odontodes