{{Short description|Species of killifish}} {{Speciesbox | image = Simpsonichthys parallelus.jpg | status = EN | status_system = IUCN3.1 | status_ref = <ref name="iucn status 10 March 2024">{{cite iucn |author=Instituto Chico Mendes de Conservação da Biodiversidade (ICMBio) |date=2023 |title=''Simpsonichthys parallelus'' |volume=2023 |article-number=e.T186930A1820519 |doi=10.2305/IUCN.UK.2023-1.RLTS.T186930A1820519.pt |access-date=10 March 2024}}</ref> | taxon = Simpsonichthys parallelus | authority = W. J. E. M. Costa, 2000 }}
'''''Simpsonichthys parallelus''''' is a species of killifish in the family Rivulidae.<ref>Costa, W.J.E.M., 2000. Descrições de quatro novas espécies de peixes anuais do gênero Simponichthys (Cyprinodontifomes: Rivulidae) das bacias dos rios São Fransisco[sic] e Paraná, nordeste e centro do Brasil. Revista Aquarium 3(25):8-15.</ref> It is found in the Paraná River basin of Brazil.
== Description == ''Simpsonichthys parallelus'' reaches a standard length of {{convert|2.3|cm|in|abbr=on}}.<ref>{{FishBase |genus= Simpsonichthys|species= parallelus| month = February | year = 2015}}</ref>
==References== {{Reflist}}
{{Taxonbar|from=Q6410752}}
parallelus Category:Taxa named by Wilson José Eduardo Moreira da Costa Category:Fish described in 2000
{{Rivulidae-stub}}