Diagnostic Description

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Distinguished from Sundaic congeners except Glyptothorax platypogonides and G. siamensis in possessing a slender body (13.8-15.8% SL). Differs from G. platypogonides in having a deeper caudal peduncle (6.8-7.3% SL vs. 5.7-6.7) and more exposed premaxillary teeth when the mouth is closed and from G. siamensis in having a larger eye (10.4-13.2% HL vs. 7.5-9.1) and a mottled color pattern lacking distinct pale stripes (vs. a uniform dark brown with distinct pale midlateral and mid-dorsal stripes) (Ref. 56938).
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Morphology

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Dorsal spines (total): 1; Dorsal soft rays (total): 6; Analsoft rays: 12 - 13; Vertebrae: 35 - 37
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Biology

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Inhabits swift, clear streams with a substrate consisting of gravel, cobble or large rocks (Ref. 2091).
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Glyptothorax exodon

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Glyptothorax exodon is a species of sisorid catfish. It is only known from the drainage basin of the Kapuas River, Borneo.

This species can be readily distinguished from most other Glyptothorax species of the region by its slender body. The only possible confusion is with Glyptothorax platypogonides (as which this species was originally misidentified) and Glyptothorax siamensis but G. exodon can be identified by its relatively large eye, uniformly mottled colour without distinct pale stripes and a large area of premaxillary teeth visible when the mouth is closed. This species of catfish possesses suction cups under its belly to allow itself to stick to smooth surfaces on the river bed, thus, allowing it to resist the fierce currents of the Kapuas River system. This species grows to a length of 6.3 centimetres (2.5 in) SL.[1]

References

  • Ng, Heok Hee & Rachmatika, Ike (2005): Glyptothorax exodon, a new species of rheophilic catfish from Borneo (Teleostei: Sisoridae). Raffles Bulletin of Zoology 53(2): 251–255. PDF fulltext
  1. ^ Froese, Rainer and Pauly, Daniel, eds. (2012). "Glyptothorax exodon" in FishBase. February 2012 version.
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Glyptothorax exodon: Brief Summary

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Glyptothorax exodon is a species of sisorid catfish. It is only known from the drainage basin of the Kapuas River, Borneo.

This species can be readily distinguished from most other Glyptothorax species of the region by its slender body. The only possible confusion is with Glyptothorax platypogonides (as which this species was originally misidentified) and Glyptothorax siamensis but G. exodon can be identified by its relatively large eye, uniformly mottled colour without distinct pale stripes and a large area of premaxillary teeth visible when the mouth is closed. This species of catfish possesses suction cups under its belly to allow itself to stick to smooth surfaces on the river bed, thus, allowing it to resist the fierce currents of the Kapuas River system. This species grows to a length of 6.3 centimetres (2.5 in) SL.

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