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Saccogaster
Life   Vertebrata   Fish   Bythitidae

Saccogaster normae
© Copyright Photographer/SFTEP, 2002 · 0
Saccogaster normae

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Saccogaster
© Copyright Photographer/SFTEP, 2002 · 0
Saccogaster
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Overview
Main identification features
  • lateral linecontinuous
  • dorsal and anal finscontinuous with c
  • preopercle - no spine
  • pelvic = 1 threadpectoral base - long bones
  • scales: head none, body none/few
SACCOGASTER

DEEP-WATER BROTULAS

No forward-pointing spine on head; eye small; top jaw bone vertically expanded at rear; teeth on sides of roof of mouth; 0-6 gill rakers on first gill arch; scales absent from head and reduced or absent from body; no spines at lower corner of preoperculum, spine at upper corner of operculum; 8 branchiostegal rays; pectoral fin supported by long radial bones; dorsal and anal fins broadly joined to tail fin; pectoral fin 12-23 rays; pelvic fin is a single thread that originates under base of pectoral fin; anal fin originates on rear half of body; male with a stalked sex organ.

An Indo-Pacific and west Atlantic genus with eight species, one of them endemic to our region.


References
  • Cohen, D.M. and Nielsen, J.G., 1972., A review of the viviparous ophidioid fishes of the genus Saccogaster., Proc. Biol. Soc. Wash., 85:445-468.
  • Jimenez-Prado, P., Béarez, P., 2004., Peces marinos del Ecuador continental / Marine fishes of continental Ecuador., SIMBIOE/NAZCA/IFEA tomo 1 y 2.

Acknowledgements

I thank Ashley MacDonald and John Pickering, University of Georgia, for technical support in building this page.


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Updated: 2019-06-26 02:16:20 gmt
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