Facultative air-breathing in the genus ; Caught in small crevices formed by loose stones; clear and fast flowing water with a gravel and rocks bottom composition .
Dorsal spines (total): 1; Dorsal soft rays (total): 7; Anal soft rays: 6. Pelvic fin spine 33.7-52.4% SL; cleithral width 52.7% SL .: elongated.
Behavioural data for Pareiorhaphis Splendens is currently being reviewed.
Diet information for Pareiorhaphis Splendens is currently being compiled.
Reproduction data for Pareiorhaphis Splendens is currently being compiled.
Freshwater; demersal. Tropical South America: Paraná and coastal drainages of Santa Catarina, Brazil.
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