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 . A female-biased sex ratio (2.38 : 1, female : male) has been reported for this species .
Physical description for Atlantirivulus Riograndensis is currently being compiled.
Behavioural data for Atlantirivulus Riograndensis is currently being reviewed.
Freshwater; benthopelagic. Tropical South America: Patos lagoon basin and adjacent coastal plains in southern Brazil.
The following diseases are known to affect Atlantirivulus Riograndensis.
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