Atlantirivulus riograndensis (Costa & Lanés, 2009)

Family:  Rivulidae (Rivulines), subfamily: Rivulinae
Max. size:  3.39 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  South America: Patos lagoon basin and adjacent coastal plains in southern Brazil.
Diagnosis:   
Biology:  The type locality is located in an open vegetation at the boarder of a forest and is a shallow pool, about 5-10 cm deep, with orangish hyaline water (Ref. 81223). A female-biased sex ratio (2.38 : 1, female : male) has been reported for this species (Ref. 92020).
IUCN Red List Status: Least Concern (LC); Date assessed: 07 November 2018 Ref. (130435)
Threat to humans:  harmless


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