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); phasma: Name 'phasma' from the Greek word 'fásma', meaning 'ghost', in reference to the almost
completely transparent appearance of the novel species, resembling a ghost. Noun in apposition.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic. Tropical
South America: Brazil.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 1.4 cm SL male/unsexed; (Ref. 133463)
Short description
Identification keys | Morphology | Morphometrics
Dorsal soft rays (total): 8 - 10; Anal soft rays: 21 - 27; Vertebrae: 32 - 34. This species is distinguished from its congeners by the following set of characters: complete lack of pigmentation on the body; maxillary teeth in slightly irregular series 13-21; dentary teeth 18-26; single postcleithrum present; two infraorbitals present, Ios 1+2; anal-fin rays 21-26; branched pelvic-fin rays 5; claustrum absent; adipose fin absent; anal-fin base 32-38; caudal peduncle 13-19 (Ref. 133463).
Body shape (shape guide): elongated; Cross section: compressed.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Mattox, G.M.T., F.C.T. Lima, R. Britz, C.S. Souza and C. Oliveira, 2024. Two new miniature species of the fish genus Priocharax from the Rio Tapajós and Amazonas drainages, Pará, Brazil (Teleostei: Characiformes: Characidae). Vertebrate Zoology 74:533-550. (Ref. 133463)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Fisheries: of no interest
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].
Trophic level (Ref.
69278): 3.0 ±0.4 se; based on size and trophs of closest relatives
Resilience (Ref.
120179): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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