Classification / Names
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Characiformes (Characins) >
Characidae (Characins; tetras) > Characinae
Etymology: Priocharax: Greek, prio = to saw + Greek, charax, -akos = a fish without identification (Ref. 45335); varii: Named for the late Richard P. Vari, one of the most infuential researchers in Neotropical ichthyology of the past 40 years; noun in genitive.
Eponymy: Dr Richard Peter Vari (1949–2016) was a curator of fish at the Smithsonian. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
বাস্তুসংস্থান
; স্বাদু পানি সমুদতলে ভাসমান বেনথোপেলাজিক. Tropical
South America: Brazil.
আকৃতি / ওজন / Age
Maturity: Lm ? range ? - ? cm
Max length : 1.4 cm SL পুরুষ/ লিঙ্গ অনিধর্ারিত ; (Ref. 128819)
Short description
সনাক্তকারী নির্দেশক | বহিঃ অঙ্গ সংস্থান | মরফোমেট্রিক্স
পৃষ্ঠীয় নরম পাখনা দন্ড (মোট ) : 9; পায়ূর নরম পাখনা্তুন্ড: 18 - 25; কশেরুকা : 33. This species is distinguished from its congeners by the presence of an adipose fin (vs. absence); differs further from P. ariel and P. pygmaeus by the pelvic-fin rays i,6 with i,5 rare (vs. i,5); postcleithra 2 present (vs absent); differs further from P. ariel by having a shorter caudal peduncle 14-18 % SL (vs. 18- 24 % SL) (Ref. 128819).
Specimens were collected between 14:00 and 17:00 in a small tributary of the Rio Jamari, close to a bush of submerged macrophytes in a slow flowing part of the Rio Preto, approximately 200 m above rapids. It was collected with Apistogramma resticulosa, Axelrodia lindeae, Axelrodia stigmatias, Hemigrammus bellottii, Hyphessobrycon aff. sweglesi, Leporinus sp., Nannostomus trifasciatus, Odontocharacidium aphanes and Satanoperca sp. Three of these species are considered miniature: the characids Axelrodia lindeae, A. stigmatias and the crenuchid Odontocharacidium aphanes. This species and the three miniatures are mostly transparent, and with the larger Hemigrammus bellottii which has a predominantly translucent body in life, an ‘almost invisible league’ for the Rio Negro was proposed by Carvalho et al., 2006 (Ref. 128847 in Ref. 128819).
Life cycle and mating behavior
পরিপক্কতা | প্রজনন | ডিম ছাড়া | ডিমসমূহ | ডিম্বধারন ক্ষমতা | শুককীট
Mattox, G.M.T., C.S. Souza, M. Toledo-Piza, R. Britz and C. Oliveira, 2020. A new miniature species of Priocharax (Teleostei: Characiformes: Characidae) from the Rio Madeira drainage, Brazil, with comments on the adipose fin in characiforms. Vertebrate Zoology 70(3):417-433. (Ref. 128819)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
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ইন্টারনেট সুত্র
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00661 (0.00301 - 0.01449), b=3.11 (2.93 - 3.29), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
ট্রফিক পর্যায়ে (Ref.
69278): 2.9 ±0.4 se; based on size and trophs of closest relatives
স্থিতিস্থাপক (Ref.
120179): উচ্চ, সর্বনিম্ন প্রজন দ্বিগুনের সময় ১৫ মাস (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
