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• 
  Species:
  Atopochilus sp. (1)
  
  Caption: Albino - close-up of mouth
• 
  Species:
  Hemiancistrus punctulatus
  
  Caption: Canada del vigia, Uruguay; Close-up of mouth
• 
  Species:
  Eutropiichthys vacha
  
  Caption: Close-up of mouth
• 
  Species:
  Astroblepus mancoi
  
  Caption: Close-up of mouth
• 
  Species:
  Ageneiosus inermis
  
  Caption: Close-up of mouth
• 
  Species:
  Tatia jaracatia
  
  Caption: Close-up of mouth
• 
  Species:
  Bagrichthys macracanthus
  
  Caption: Close-up of mouth
• 
  Species:
  Cetopsis coecutiens
  
  Caption: Close-up of mouth
• 
  Species:
  Cetopsis coecutiens
  
  Caption: Close-up of mouth
• 
  Species:
  Chaca bankanensis
  
  Caption: Close-up of mouth
• 
  Species:
  Gymnallabes typus
  
  Caption: Close-up of mouth
• 
  Species:
  Phyllonemus typus
  
  Caption: Close-up of mouth
• 
  Species:
  Rhinodoras gallagheri
  
  Caption: Close-up of mouth
• 
  Species:
  Tenellus trimaculatus
  
  Caption: Close-up of mouth
• 
  Species:
  Noturus gyrinus
  
  Caption: Close-up of mouth
• 
  Species:
  Acanthicus adonis
  
  Caption: Close-up of mouth
• 
  Species:
  Acanthicus hystrix
  
  Caption: Close-up of mouth
• 
  Species:
  Acestridium sp. `MANICORE`
  
  Caption: Close-up of mouth
• 
  Species:
  Ancistomus sp. (L147)
  
  Caption: Close-up of mouth
• 
  Species:
  Ancistomus sp. (L487)
  
  Caption: Close-up of mouth
• 
  Species:
  Ancistrus cirrhosus
  
  Caption: Close-up of mouth
• 
  Species:
  Ancistrus dolichopterus
  
  Caption: Close-up of mouth
• 
  Species:
  Ancistrus hoplogenys
  
  Caption: Close-up of mouth
• 
  Species:
  Ancistrus sp. `LOWER RIO NEGRO`
  
  Caption: Close-up of mouth
• 
  Species:
  Ancistrus sp. (2)
  
  Caption: Close-up of mouth
• 
  Species:
  Ancistrus sp. (3)
  
  Caption: Close-up of mouth
• 
  Species:
  Ancistrus sp. (L071)
  
  Caption: Close-up of mouth
• 
  Species:
  Ancistrus sp. (L088)
  
  Caption: Close-up of mouth
• 
  Species:
  Ancistrus sp. (L480)
  
  Caption: Close-up of mouth
• 
  Species:
  Ancistrus sp. (L481)
  
  Caption: Close-up of mouth
• 
  Species:
  Avalithoxus jantjae
  
  Caption: Close-up of mouth
• 
  Species:
  Baryancistrus chrysolomus
  
  Caption: Close-up of mouth
• 
  Species:
  Baryancistrus sp. (L019)
  
  Caption: Close-up of mouth
• 
  Species:
  Baryancistrus xanthellus
  
  Caption: Close-up of mouth
• 
  Species:
  Chaetostoma orientale
  
  Caption: Close-up of mouth
• 
  Species:
  Chaetostoma sp. (5)
  
  Caption: Close-up of mouth
• 
  Species:
  Dekeyseria amazonica
  
  Caption: Close-up of mouth
• 
  Species:
  Delturus sp. (1)
  
  Caption: Close-up of mouth
• 
  Species:
  Guyanancistrus sp. (L490)
  
  Caption: Close-up of mouth
• 
  Species:
  Hemiancistrus subviridis
  
  Caption: Close-up of mouth
• 
  Species:
  Hemiancistrus subviridis
  
  Caption: Close-up of mouth
• 
  Species:
  Hemiodontichthys acipenserinus
  
  Caption: Close-up of mouth
• 
  Species:
  Hisonotus leucofrenatus
  
  Caption: Close-up of mouth
• 
  Species:
  Hypancistrus sp. (L201)
  
  Caption: Close-up of mouth
• 
  Species:
  Hypancistrus sp. (L260)
  
  Caption: Close-up of mouth
• 
  Species:
  Hypancistrus sp. (L262)
  
  Caption: Close-up of mouth
• 
  Species:
  Hypancistrus sp. (L297)
  
  Caption: Close-up of mouth
• 
  Species:
  Hypancistrus sp. (L340)
  
  Caption: Close-up of mouth
• 
  Species:
  Hypancistrus sp. (L450)
  
  Caption: Close-up of mouth
• 
  Species:
  Hypancistrus sp. (L489)
  
  Caption: Close-up of mouth
• 
  Species:
  Hypancistrus sp. (L501)
  
  Caption: Close-up of mouth
• 
  Species:
  Hypancistrus vandragti
  
  Caption: Close-up of mouth
• 
  Species:
  Hypancistrus vandragti
  
  Caption: Close-up of mouth
• 
  Species:
  Hypoptopoma inexspectatum
  
  Caption: Close-up of mouth
• 
  Species:
  Hypoptopoma sp. (2)
  
  Caption: Close-up of mouth
• 
  Species:
  Hypostomus ancistroides
  
  Caption: Close-up of mouth
• 
  Species:
  Hypostomus asperatus
  
  Caption: Close-up of mouth
• 
  Species:
  Hypostomus cf. cochliodon
  
  Caption: Close-up of mouth
• 
  Species:
  Hypostomus commersoni
  
  Caption: Close-up of mouth
• 
  Species:
  Hypostomus coppenamensis
  
  Caption: Close-up of mouth
• 
  Species:
  Hypostomus faveolus
  
  Caption: Close-up of mouth
• 
  Species:
  Hypostomus fuscomaculatus
  
  Caption: Close-up of mouth
• 
  Species:
  Hypostomus latifrons
  
  Caption: Close-up of mouth
• 
  Species:
  Hypostomus luteus
  
  Caption: Close-up of mouth
• 
  Species:
  Hypostomus micromaculatus
  
  Caption: Close-up of mouth
• 
  Species:
  Hypostomus mutucae
  
  Caption: Close-up of mouth
• 
  Species:
  Hypostomus plecostomus
  
  Caption: Close-up of mouth
• 
  Species:
  Hypostomus roseopunctatus
  
  Caption: Close-up of mouth
• 
  Species:
  Hypostomus soniae
  
  Caption: Close-up of mouth
• 
  Species:
  Hypostomus sp. (L360)
  
  Caption: Close-up of mouth
• 
  Species:
  Hypostomus sp. (L517)
  
  Caption: Close-up of mouth
• 
  Species:
  Hypostomus weberi
  
  Caption: Close-up of mouth
• 
  Species:
  Isorineloricaria villarsi
  
  Caption: Close-up of mouth
• 
  Species:
  Lasiancistrus heteracanthus
  
  Caption: Close-up of mouth
• 
  Species:
  Lasiancistrus sp. (L479)
  
  Caption: Close-up of mouth
• 
  Species:
  Lasiancistrus volcanensis
  
  Caption: Close-up of mouth
• 
  Species:
  Leporacanthicus galaxias
  
  Caption: Close-up of mouth
• 
  Species:
  Leporacanthicus heterodon
  
  Caption: Close-up of mouth
• 
  Species:
  Leporacanthicus sp. (L473)
  
  Caption: Close-up of mouth
• 
  Species:
  Leporacanthicus triactis
  
  Caption: Close-up of mouth
• 
  Species:
  Limatulichthys griseus
  
  Caption: Close-up of mouth
• 
  Species:
  Lithoxancistrus orinoco
  
  Caption: Close-up of mouth
• 
  Species:
  Loricaria luciae
  
  Caption: Close-up of mouth
• 
  Species:
  Loricariichthys anus
  
  Caption: Close-up of mouth
• 
  Species:
  Loricariichthys anus
  
  Caption: Close-up of mouth
• 
  Species:
  Loricariichthys anus
  
  Caption: Close-up of mouth
• 
  Species:
  Megalancistrus sp. (LDA097)
  
  Caption: Close-up of mouth
• 
  Species:
  Otocinclus cocama
  
  Caption: Close-up of mouth
• 
  Species:
  Panaqolus cf. nocturnus
  
  Caption: Close-up of mouth
• 
  Species:
  Panaqolus maccus
  
  Caption: Close-up of mouth
• 
  Species:
  Panaqolus sp. (1)
  
  Caption: Close-up of mouth
• 
  Species:
  Panaqolus sp. (L002)
  
  Caption: Close-up of mouth
• 
  Species:
  Panaqolus sp. (L206)
  
  Caption: Close-up of mouth
• 
  Species:
  Panaqolus sp. (L403)
  
  Caption: Close-up of mouth
• 
  Species:
  Panaqolus sp. (L458)
  
  Caption: Close-up of mouth
• 
  Species:
  Panaqolus sp. (L459)
  
  Caption: Close-up of mouth
• 
  Species:
  Panaqolus sp. (L460)
  
  Caption: Close-up of mouth
• 
  Species:
  Panaqolus sp. (L465)
  
  Caption: Close-up of mouth
• 
  Species:
  Panaqolus sp. (L466)
  
  Caption: Close-up of mouth
• 
  Species:
  Panaqolus sp. (L467)
  
  Caption: Close-up of mouth
• 
  Species:
  Panaqolus sp. (L468)
  
  Caption: Close-up of mouth
• 
  Species:
  Panaqolus sp. (L469)
  
  Caption: Close-up of mouth
• 
  Species:
  Panaqolus sp. (L482)
  
  Caption: Close-up of mouth
• 
  Species:
  Panaqolus sp. (L484)
  
  Caption: Close-up of mouth
• 
  Species:
  Panaque bathyphilus
  
  Caption: Close-up of mouth
• 
  Species:
  Panaque cf. armbrusteri`xingu`
  
  Caption: Close-up of mouth
• 
  Species:
  Panaque cf. cochliodon`upper magdalena`
  
  Caption: Close-up of mouth
• 
  Species:
  Panaque cf. cochliodon`upper magdalena`
  
  Caption: Close-up of mouth
• 
  Species:
  Panaque cf. nigrolineatus`aripuana`
  
  Caption: Close-up of mouth
• 
  Species:
  Panaque nigrolineatus
  
  Caption: Close-up of mouth
• 
  Species:
  Panaque nigrolineatus
  
  Caption: Close-up of mouth
• 
  Species:
  Panaque nigrolineatus laurafabianae
  
  Caption: Close-up of mouth
• 
  Species:
  Panaque sp. (L191)
  
  Caption: Close-up of mouth
• 
  Species:
  Panaque titan
  
  Caption: Close-up of mouth
• 
  Species:
  Paralithoxus cf. raso
  
  Caption: Close-up of mouth
• 
  Species:
  Parancistrus aurantiacus
  
  Caption: Close-up of mouth
• 
  Species:
  Parancistrus aurantiacus
  
  Caption: Close-up of mouth
• 
  Species:
  Parancistrus sp. (LDA046)
  
  Caption: Close-up of mouth
• 
  Species:
  Parotocinclus bahiensis
  
  Caption: Close-up of mouth
• 
  Species:
  Parotocinclus maculicauda
  
  Caption: Close-up of mouth
• 
  Species:
  Peckoltia braueri
  
  Caption: Close-up of mouth
• 
  Species:
  Peckoltia furcata
  
  Caption: Close-up of mouth
• 
  Species:
  Peckoltia lineola
  
  Caption: Close-up of mouth
• 
  Species:
  Peckoltia multispinis
  
  Caption: Close-up of mouth
• 
  Species:
  Peckoltia sp. (L205)
  
  Caption: Close-up of mouth
• 
  Species:
  Peckoltia sp. (L211)
  
  Caption: Close-up of mouth
• 
  Species:
  Peckoltia sp. (L387)
  
  Caption: Close-up of mouth
• 
  Species:
  Peckoltia vittata
  
  Caption: Close-up of mouth
• 
  Species:
  Pogonopoma obscurum
  
  Caption: Close-up of mouth
• 
  Species:
  Pogonopoma wertheimeri
  
  Caption: Close-up of mouth
• 
  Species:
  Pseudacanthicus cf. spinosus
  
  Caption: Close-up of mouth
• 
  Species:
  Pseudacanthicus pirarara
  
  Caption: Close-up of mouth
• 
  Species:
  Pseudacanthicus pitanga
  
  Caption: Close-up of mouth
• 
  Species:
  Pseudacanthicus pitanga
  
  Caption: Close-up of mouth
• 
  Species:
  Pseudacanthicus serratus
  
  Caption: Close-up of mouth
• 
  Species:
  Pseudacanthicus sp. (L097)
  
  Caption: Close-up of mouth
• 
  Species:
  Pseudacanthicus sp. (L452)
  
  Caption: Close-up of mouth
• 
  Species:
  Pseudacanthicus sp. (L452)
  
  Caption: Close-up of mouth
• 
  Species:
  Pseudancistrus pectegenitor
  
  Caption: Close-up of mouth
• 
  Species:
  Pseudancistrus sp. (L491)
  
  Caption: Close-up of mouth
• 
  Species:
  Pseudohemiodon almendarizi
  
  Caption: Close-up of mouth
• 
  Species:
  Pseudohemiodon laticeps
  
  Caption: Close-up of mouth
• 
  Species:
  Pseudolithoxus anthrax
  
  Caption: Close-up of mouth
• 
  Species:
  Pseudolithoxus dumus
  
  Caption: Close-up of mouth
• 
  Species:
  Pseudolithoxus nicoi
  
  Caption: Close-up of mouth
• 
  Species:
  Pseudolithoxus sp. (1)
  
  Caption: Close-up of mouth
• 
  Species:
  Pseudorinelepis genibarbis
  
  Caption: Close-up of mouth
• 
  Species:
  Pterygoplichthys disjunctivus
  
  Caption: Close-up of mouth
• 
  Species:
  Pterygoplichthys gibbiceps
  
  Caption: Close-up of mouth
• 
  Species:
  Pterygoplichthys joselimaianus
  
  Caption: Close-up of mouth
• 
  Species:
  Pterygoplichthys pardalis
  
  Caption: Close-up of mouth
• 
  Species:
  Pterygoplichthys scrophus
  
  Caption: Close-up of mouth
• 
  Species:
  Rhadinoloricaria rhami
  
  Caption: Close-up of mouth
• 
  Species:
  Rhadinoloricaria sp. `RIO PALOMETILLA`
  
  Caption: Close-up of mouth
• 
  Species:
  Rhinelepis strigosa
  
  Caption: Close-up of mouth
• 
  Species:
  Rineloricaria formosa
  
  Caption: Close-up of mouth
• 
  Species:
  Rineloricaria parva
  
  Caption: Close-up of mouth
• 
  Species:
  Rineloricaria sp. `ARGENTINA`
  
  Caption: Close-up of mouth
• 
  Species:
  Scobinancistrus aureatus
  
  Caption: Close-up of mouth
• 
  Species:
  Scobinancistrus cf. pariolispos
  
  Caption: Close-up of mouth
• 
  Species:
  Scobinancistrus raonii
  
  Caption: Close-up of mouth
• 
  Species:
  Scobinancistrus sp. (L253)
  
  Caption: Close-up of mouth
• 
  Species:
  Scobinancistrus sp. (L362)
  
  Caption: Close-up of mouth
• 
  Species:
  Scobinancistrus sp. (L368)
  
  Caption: Close-up of mouth
• 
  Species:
  Spatuloricaria sp. `RIO GUAMA`
  
  Caption: Close-up of mouth
• 
  Species:
  Spatuloricaria sp. (LDA114)
  
  Caption: Close-up of mouth
• 
  Species:
  Spatuloricaria terracanticum
  
  Caption: Close-up of mouth
• 
  Species:
  Spectracanthicus murinus
  
  Caption: Close-up of mouth
• 
  Species:
  Spectracanthicus punctatissimus
  
  Caption: Close-up of mouth
• 
  Species:
  Spectracanthicus sp. (L391)
  
  Caption: Close-up of mouth
• 
  Species:
  Spectracanthicus zuanoni
  
  Caption: Close-up of mouth
• 
  Species:
  Sturisoma barbatum
  
  Caption: Close-up of mouth
• 
  Species:
  Sturisoma robustum
  
  Caption: Close-up of mouth
• 
  Species:
  Sturisoma sp. `JACAREACANGA`
  
  Caption: Close-up of mouth
• 
  Species:
  Sturisomatichthys festivus
  
  Caption: Close-up of mouth
• 
  Species:
  Sturisomatichthys sp. `RIO ATABAPO`
  
  Caption: Close-up of mouth
• 
  Species:
  Atopochilus mandevillei
  
  Caption: Close-up of mouth
• 
  Species:
  Atopodontus adriaensi
  
  Caption: Close-up of mouth
• 
  Species:
  Chiloglanis anoterus
  
  Caption: Close-up of mouth
• 
  Species:
  Chiloglanis congicus
  
  Caption: Close-up of mouth
• 
  Species:
  Chiloglanis congicus
  
  Caption: Close-up of mouth
• 
  Species:
  Chiloglanis polypogon
  
  Caption: Close-up of mouth
• 
  Species:
  Chiloglanis pretoriae
  
  Caption: Close-up of mouth
• 
  Species:
  Chiloglanis sp. `PUNGWE RIVER`
  
  Caption: Close-up of mouth
• 
  Species:
  Euchilichthys cf. astatodon
  
  Caption: Close-up of mouth
• 
  Species:
  Synodontis acanthomias
  
  Caption: Close-up of mouth
• 
  Species:
  Synodontis acanthomias
  
  Caption: Close-up of mouth
• 
  Species:
  Synodontis angelicus
  
  Caption: Close-up of mouth
• 
  Species:
  Synodontis brichardi
  
  Caption: Close-up of mouth
• 
  Species:
  Synodontis caudalis
  
  Caption: Close-up of mouth
• 
  Species:
  Synodontis macrostigma
  
  Caption: Close-up of mouth
• 
  Species:
  Synodontis macrostoma
  
  Caption: Close-up of mouth
• 
  Species:
  Synodontis njassae
  
  Caption: Close-up of mouth
• 
  Species:
  Synodontis ocellifer
  
  Caption: Close-up of mouth
• 
  Species:
  Synodontis polli
  
  Caption: Close-up of mouth
• 
  Species:
  Synodontis schall
  
  Caption: Close-up of mouth
• 
  Species:
  Synodontis smiti
  
  Caption: Close-up of mouth
• 
  Species:
  Synodontis soloni
  
  Caption: Close-up of mouth
• 
  Species:
  Synodontis sp. `NIGERIA`
  
  Caption: Close-up of mouth
• 
  Species:
  Synodontis sp. `POLLI WHITE`
  
  Caption: Close-up of mouth
• 
  Species:
  Synodontis zambezensis
  
  Caption: Close-up of mouth
• 
  Species:
  Calophysus macropterus
  
  Caption: Close-up of mouth
• 
  Species:
  Pimelodus argenteus
  
  Caption: Close-up of mouth
• 
  Species:
  Platystomatichthys sturio
  
  Caption: Close-up of mouth
• 
  Species:
  Platystomatichthys sturio
  
  Caption: Close-up of mouth
• 
  Species:
  Pterocryptis berdmorei
  
  Caption: Close-up of mouth
• 
  Species:
  Wallago attu
  
  Caption: Close-up of mouth
• 
  Species:
  Exostoma tenuicaudatum
  
  Caption: Close-up of mouth
• 
  Species:
  Pseudostegophilus nemurus
  
  Caption: Close-up of mouth
• 
  Species:
  Panaqolus sp. `ACRE`
  
  Caption: Close-up of mouth - Rio Amonia near the Brazilian town of Marechal Taumaturgo
• 
  Species:
  Pterygoplichthys gibbiceps
  
  Caption: Close-up of mouth (albino)
• 
  Species:
  Hypancistrus sp. (L004)
  
  Caption: Close-up of mouth (L028)
• 
  Species:
  Hypancistrus sp. (L316)
  
  Caption: Close-up of mouth (male)
• 
  Species:
  Peckoltia sp. (L080)
  
  Caption: Close-up of mouth (male)
• 
  Species:
  Synodontis vanderwaali
  
  Caption: Close-up of mouth & barbels
• 
  Species:
  Hoplosternum littorale
  
  Caption: Close-up of mouth and barbels
• 
  Species:
  Ancistrus sp. (3)
  
  Caption: Close-up of mouth of male
• 
  Species:
  Pseudacanthicus sp. (L273)
  
  Caption: Close-up of mouth showing teeth
• 
  Species:
  Synodontis irsacae
  
  Caption: Close-up of mouth showing teeth
• 
  Species:
  Oreoglanis omkoiensis
  
  Caption: Close-up of mouth, showing notched lower lip
• 
  Species:
  Hypostomus hemiurus
  
  Caption: Close-up of mouth. Photo: Andrew Snyder
• 
  Species:
  Acanthicus hystrix
  
  Caption: Close-up of mouth. Rio Tocantins, near town of Estreito, Maranhão state, Brazil
• 
  Species:
  Baryancistrus xanthellus
  
  Caption: L081 close-up of mouth
• 
  Species:
  Dekeyseria picta
  
  Caption: L168, close-up of mouth
• 
  Species:
  Chaetostoma sacramento
  
  Caption: L455, close-up of mouth
• 
  Species:
  Pseudolithoxus kinja
  
  Caption: L492, Female, close-up of mouth
• 
  Species:
  Pseudolithoxus kinja
  
  Caption: L492, Male, close-up of mouth
• 
  Species:
  Panaque suttonorum
  
  Caption: Maracaibo basin; Close-up of mouth
• 
  Species:
  Hypostomus sp. `RIO IGUAZU`
  
  Caption: Rio Iguazu; Close-up of mouth
• 
  Species:
  Hypostomus pyrineusi
  
  Caption: Rio Sucunduri. Close-up of mouth
• 
  Species:
  Rineloricaria jubata
  
  Caption: San Juan River, Choco, Colombia. Close-up of mouth