No image available for this species; drawing shows typical species in Characidae.
Brazil country information
Common names:
[No common name]
Occurrence:
native
Salinity:
freshwater
Abundance:
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Importance:
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Aquaculture:
never/rarely
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Regulations:
no regulations
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Uses:
no uses
Comments:
Type locality of Priocharax britzi, Amazonas, Canutama, small lake approximately 400 m from the rio Ipixuna, after bridge crossing this river, on the right side of the Transamazônica Road (BR–230) going from Humaitá to Lábrea, rio Ipixuna drainage, upper Purus basin. Known only from its type locality in a marginal lake approximately 400 m from the rio Ipixuna, a tributary of the rio Purus (Ref. 124594).
Status of threat: This species was found in a single location, an isolated small lake near the road, where the environmental conditions seem degraded, with depauperate riparian vegetation and silted substrate. Efforts to find specimens in the nearby rio Ipixuna and other close locations were not successful. The type locality is near a protected area (Floresta Nacional de Balata-Tufari), which was not sampled. Future studies should investigate the possibility that the species occur in other localities within the protected area and along portions of the rio Ipixuna that may connect to the lake during the wet season. There are no known imminent threats that would put the species at risk of extinction, thus, the species should be classified as Least Concern (LC) according to International Union for Conservation of Nature (IUCN) categories and criteria (IUCN Standards and Petitions Subcommittee, 2019) pending further information on its real distribution (Ref. 124594).
National Checklist:
Country Information:
https://www.cia.gov/library/publications/resources/the-world-factbook/geos/br.html
National Fisheries Authority:
Occurrences:
OccurrencesPoint map
Main Ref:
Mattox, G.M.T., C.d.S. de Souza, M. Toledo-Piza and C. Oliveira, 2021
National Database:
Classification / Names आम नाम | उपशब्द | Catalog of Fishes(वर्ग, प्रजाति) | ITIS | CoL | WoRMS | Cloffa
> Characiformes (Characins) > Characidae (Characins; tetras) > Characinae
Etymology: Priocharax:Greek, prio = to saw + Greek, charax, -akos = a fish without identification (Ref. 45335); britzi:Named after Dr. Ralf Britz, noteworthy ichthyologist, he mastered the world of small fishes and has described more than 20 miniature species, including two species of Priocharax; noun in the genitive case..
Environment: milieu / climate zone / depth range / distribution range
पारिस्थितिकी
; स्वच्छ जल, अलवण जल बेनथोपिलाजिक; गहराई सीमा 0 - 1 m (Ref. 124594). Tropical
पृष्ठीय सौफट रेज़ (सम्पूर्ण): 9; ऐनल सौफट रेज़: 22 - 27; जानवरों की रीड़ का जोड़: 32 - 33. This species is distinguished from all its congeners except P. pygmaeus by having lower number of teeth in the maxilla 21-30 (vs 32-58) and dentary 26-29 (vs 33-55); differs from P. pygmaeus by the presence of two postcleithra (vs. absence and branched anal-fin rays 22-27 modes 25 and 26 (vs. 19-22, mode 19); differs fom P. nanus and P. varii by having pelvic-fin rays i,5 (vs.i,6) and postcleithrum 3, slender and sinuous (vs. relatively thick and straight); differs from P. ariel by the branched anal-fin rays 22-27 (vs. 16-22) and with two postcleithra (vs. absent); further differs from P. varii by the absence of the adipose fin (vs. presence) and from P. nanus by the absence of the claustrum (vs. presence); with a shorter snout relative to the orbital diameter when compared to all congeners except P. nanus [range of the proportion of snout length in relation to orbital diameter and its mean is 45-59 (mean = 53.6; SD = 3.8) in P. britzi vs. 60-76 (mean = 65.5; SD = 4.9) in P. pygmaeus, 54-81 (mean = 67.0; SD = 5.1) in P. varii and 54-84 (mean = 68.4; SD = 6.3) in P. ariel]. Molecular analyses further support the recognition of the new species (Ref. 124594).
Specimens were collected from a small lake approximately 15 m wide and 35 m long, apparently isolated from the main channel of the rio Ipixuna and where the water level was low as sampling occurred during the dry season (September). It is possible that this lake connects to the main channel in the wet season. Collection was done near the shore at depths varying from 0.5–1.0 m, when the bottom was muddy with patches of leaf litter. Vegetation around the lake was composed mainly of dead logs and branches. Collected with the characiforms Carnegiella marthae, Hemigrammus sp., Hyphessobrycon rosaceus. Iguanodectes spilurus, Microcharacidium sp., Nannostomus digrammus, Nannostomus eques; the catfish Amblydoras affinis; the knifefishes Brachyhypopomus beebei, Microsternarchus bilineatus; the cichlids Apistogramma cf. pulchra, Biotoecus opercularis and Crenicichla cyanotus (Ref. 124594).
Life cycle and mating behavior परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | अंडे | Fecundity | लार्वा
Mattox, G.M.T., C.d.S. de Souza, M. Toledo-Piza and C. Oliveira, 2021. A new miniature species of Priocharax (Characiformes: Characidae) from the upper rio Ipixuna, Purus drainage, Brazil. Neotrop. Ichthyol. 19(2). (Ref. 124594)
