Potamorrhaphis Petersi (Potamorrhaphis petersi), first described by Collette, 1974 is a medium-sized fish in the family Belonidae (order Beloniformes). Adults typically reach 24.60 cm in maximum length. It inhabits freshwater systems including rivers, streams, and lakes. It occurs in Tropical waters. It feeds on a mix of small fish and invertebrates as a mid-level predator. On the IUCN Red List, it is classified as Least Concern.
Dorsal spines (total): 0; Dorsal soft rays (total): 37 - 43; Anal spines: 0; Anal soft rays: 32 - 39; Vertebrae: 77 - 85. Most similar to P. guianensis from which it differs most markedly in higher numbers of dorsal and anal fin rays, vertebrae, and predorsal scales. Predorsal scales 109-143, mean 130.5.
Behavioural data for Potamorrhaphis Petersi is currently being reviewed.
Freshwater; pelagic; depth range 0 - ? m. Tropical South America: upper Orinoco and Negro River basins.
Occurrence records from the Global Biodiversity Information Facility (GBIF) - 4 records indexed .
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