Inhabit channels of white-water and black-water rivers . Stomach contents indicates that this species feeds on the scales and tails of other electric fishes (based on the presence of stacked scales, vertebrae and cartilaginous regenerated caudal filament rods) .
This species is distinguished from all its congeners by the following: with a long snout, head length from the tip of the snout to the front of the eye) is 35-38% HL (vs. 24-32 %HL); eyes near the dorsal margin of the head (vs. eyes located on lateral margin of head in all species except S. duccis); maxilla with an enlarged anterior process greater than one-third the length of the descending blade (vs. reduced anterior process and less than one-third the length of descending maxillary blade); a robust oral dentition usually visible externally in mature specimens (vs. obscured dentition in all species except duccis, rex) .Cross section: compressed.
Behavioural data for Sternarchella Raptor is currently being reviewed.
Freshwater; benthopelagic; depth range 2 - 23 m . Tropical South America: Amazon.
the scales and tails of other electric fishes (based on the presence of stacked scales, vertebrae an
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