Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Characiformes (Characins) >
Acestrorhamphidae (American tetras) > Tyttobryconinae
Etymology: Priocharax: Greek, prio = to saw + Greek, charax, -akos = a fish without identification (Ref. 45335); robbiei: Name 'robbiei' in honor of Roberto 'Robbie' Taliaferro Mattox Jr., the father of the author, who passed away while G.M.T.M (one of the authors) was in the field collecting the type series.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic. Tropical
South America: Brazil.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 1.6 cm SL male/unsexed; (Ref. 137886)
Short description
Identification keys | Morphology | Morphometrics
Dorsal soft rays (total): 7 - 9; Anal soft rays: 20 - 28; Vertebrae: 32 - 34. This species is distinguished from its congeners by the following set of characters: claustrum absent; two postcleithra; number of branched anal-fin rays 20-28, mode 25; five branched pelvic-fin rays; adipose fin absent; and a round flap of skin between contralateral pelvic-fins bases absent (Ref. 137885).
Body shape (shape guide): elongated; Cross section: compressed.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Lopez, G.G.S., C.S. Souza, L. Reia, L.A. Mantuaneli, B.F. Morales, F.C.T. Lima, C. Oliveira and G.M.T. Mattox, 2025. Two new species of Miniature tetras of the genus Priocharax (Teleostei: Characiformes: Acestrorhamphidae) from the Rio Purus and Solimões Drainages, Amazonas, Brazil Taxonomy 5:36. (Ref. 137886)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
Human uses
Fisheries: of no interest
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