Gymnotus ucamara: a new species of Neotropical electric fish from the Peruvian Amazon (Ostariophysi: Gymnotidae), with notes on ecology and electric organ discharges

  • Crampton W
  • Lovejoy N
  • Albert J
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Abstract

A new species of Neotropical electric fish, Gymnotus ucamara, is described from floodplain habi- tats in the Rio Ucayali Basin, Peru. The new species is distinguishable from all congeners by the following combination of characters: a clear patch at the caudal end of the anal fin; two laterosen- sory canal pores (from the preopercular-mandibular series) in the dorso-posterior portion of the pre- opercle; a coloration pattern with 1824 dark brown bands separated by narrow pale interbands which are less than one-third the width of the dark bands; a long head (12.213.4 % total length); many (1011) scales rows over the anal fin pterygiophores; few (38-43) pored lateral-line scales to the first lateral-line ramus; and a low (7591) total number of pored lateral-line scales.

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Crampton, W. G. R., Lovejoy, N. R., & Albert, J. S. (2003). Gymnotus ucamara: a new species of Neotropical electric fish from the Peruvian Amazon (Ostariophysi: Gymnotidae), with notes on ecology and electric organ discharges. Zootaxa, 277(August), 1–18. https://doi.org/10.1144/GSL.SP.1988.039.01.04

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