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• 
  Species:
  Otocinclus bororo
  
  Caption: 4 cm TL adult in Rio Formoso
• 
  Species:
  Otocinclus bororo
  
  Caption: 4 cm TL adult in Rio Formoso
• 
  Species:
  Otocinclus bororo
  
  Caption: Adult from Rio Formoso, Mato Grosso Do Sul
• 
  Species:
  Ancistrus sp. `RIO FORMOSO II`
  
  Caption: Adult male in Rio Formoso, Mato Grosso do Sul
• 
  Species:
  Otocinclus bororo
  
  Caption: Adults from Rio Formoso, Mato Grosso Do Sul
• 
  Species:
  Otocinclus bororo
  
  Caption: Adults from Rio Formoso, Mato Grosso Do Sul
• 
  Species:
  Hypostomus froehlichi
  
  Caption: Capture of a young 11 cm fish from rio formoso
• 
  Species:
  Hypostomus basilisko
  
  Caption: Caught in Rio Formoso
• 
  Species:
  Hypostomus froehlichi
  
  Caption: Dorsal of a young 11 cm fish from rio formoso
• 
  Species:
  Hypostomus froehlichi
  
  Caption: Dorsal view of a young 11 cm fish from rio formoso
• 
  Species:
  Trachelyopterus galeatus
  
  Caption: Habitat in Rio Formoso in Mato Grosso do Sul
• 
  Species:
  Farlowella paraguayensis
  
  Caption: Habitat: Rio Formoso, Mato Grosso do Sul
• 
  Species:
  Hypostomus froehlichi
  
  Caption: Head of a young 11 cm fish from rio formoso
• 
  Species:
  Hypostomus froehlichi
  
  Caption: Head of Hypostomus sp. Rio Formoso
• 
  Species:
  Ancistrus sp. `RIO FORMOSO II`
  
  Caption: Head of male in Rio Formoso
• 
  Species:
  Hypostomus froehlichi
  
  Caption: Mouth of a young 11 cm fish from rio formoso
• 
  Species:
  Farlowella paraguayensis
  
  Caption: On a Gopro camera in Rio Formoso, Mato Grosso do Sul
• 
  Species:
  Otocinclus bororo
  
  Caption: Rio formoso
• 
  Species:
  Otocinclus bororo
  
  Caption: Rio formoso
• 
  Species:
  Trachelyopterus galeatus
  
  Caption: Rio Formoso in Mato Grosso do Sul, Brazil
• 
  Species:
  Imparfinis mirini
  
  Caption: Rio Formoso in Mato Grosso do Sul, Brazil
• 
  Species:
  Ancistrus sp. `RIO FORMOSO II`
  
  Caption: Rio Formoso in Mato Grosso do Sul, Brazil
• 
  Species:
  Hypostomus froehlichi
  
  Caption: Rio Formoso in Mato Grosso do Sul, Brazil
• 
  Species:
  Hypostomus froehlichi
  
  Caption: Rio Formoso in Mato Grosso do Sul, Brazil
• 
  Species:
  Ancistrus sp. `RIO FORMOSO II`
  
  Caption: Rio formoso, cave red from high iron levels
• 
  Species:
  Hypostomus basilisko
  
  Caption: Rio Formoso, Mato Grosso do Sul
• 
  Species:
  Imparfinis mirini
  
  Caption: Stress colors after capture (Rio Formoso)
• 
  Species:
  Hypostomus froehlichi
  
  Caption: Stress colors after capture from rio formoso
• 
  Species:
  Hypostomus froehlichi
  
  Caption: Tail of a young 11 cm fish from rio formoso
• 
  Species:
  Hypostomus basilisko
  
  Caption: With an eye defect in Rio Formoso