Editing Convergent evolution (section)

=== Electric fishes ===

The [[Gymnotiformes]] of South America and the [[Mormyridae]] of Africa independently evolved [[Electroreception and electrogenesis|passive electroreception]] (around 119 and 110 million years ago, respectively). Around 20 million years after acquiring that ability, both groups evolved active [[Electric fish|electrogenesis]], producing weak electric fields to help them detect prey.<ref name="Lavoué Miya 2012">{{cite journal |last1=Lavoué |first1=Sébastien |last2=Miya |first2=Masaki |last3=Arnegard |first3=Matthew E. |last4=Sullivan |first4=John P. |last5=Hopkins |first5=Carl D. |last6=Nishida |first6=Mutsumi |title=Comparable Ages for the Independent Origins of Electrogenesis in African and South American Weakly Electric Fishes |journal=PLOS ONE |volume=7 |issue=5 |date=14 May 2012 |doi=10.1371/journal.pone.0036287 |page=e36287|pmid=22606250 |pmc=3351409 |bibcode=2012PLoSO...736287L |doi-access=free }}</ref>

<gallery class=center mode=nolines widths="" caption="Convergence of [[weakly electric fish]]es">
File:Elephantfish spike waveform.svg|Gymnotiform electrolocation waveform
File:Sternarchorhynchus oxyrhynchus.jpg|A [[Gymnotiformes|gymnotiform]] electric fish of South America
File:Gnathonemus_petersii.jpg|A [[Mormyridae|mormyrid]] electric fish of Africa
File:Elephantfish spike waveform.svg|Mormyrid electrolocation waveform
</gallery>