Classification / Names
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Characiformes (Characins) >
Crenuchidae (South American darters) > Characidiinae
Etymology: Characidium: Diminutive of Charax, -akos = a fish without identification (Ref. 45335); nana: Named for Mariana Barreira Mendonça, the first author’s sister, known by her family and friends as 'Naná'. A noun in apposition.
Eponymy: Mariana Barreira Mendonça is the senior author’s sister. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / गहराई सीमा / distribution range
पारिस्थितिकी
; स्वच्छ जल, अलवण जल बेनथोपिलाजिक. Tropical
South America: Rio Xingu drainage and Rio Tapajós drainage in Brazil.
आकार / वज़न / Age
परिपक्व अवधि: Lm ? range ? - ? cm
Max length : 2.5 cm SL पुल्लिंग / अलिंग; (Ref. 104905)
Short description
पहचान कुंजी | आकृति विज्ञान | मौरफोमैटरिक्स
पृष्ठीय सौफट रेज़ (सम्पूर्ण) : 11 - 12; ऐनल सौफट रेज़: 8 - 10; जानवरों की रीड़ का जोड़: 32 - 33. Characidium nana is diagnosed from all other species of Characidium, except C. bahiense, C. interruptum, C. laterale, C. mirim, C. nupelia, C. rachovii, C. stigmosum, and C. xavante by having short, incomplete lateral line, the lack of the inner dentary series of teeth, and the absence of the parietal branch of the supraorbital laterosensory canal. It differs from C. bahiense, C. interruptum, C. laterale and C. rachvoii by the absence of the adipose fin (vs. presence of adipose fin); from Characidium mirim and C. stigmosum by having a conspicuous dark blotch onto the caudal peduncle (vs. absence of caudal blotch); and from C. nupelia and C. xavante by possessing a broad, conspicuous dark midlateral stripe (vs. narrow, inconspicuous midlateral stripe). It is further distinguished from C. xavante by having 12 circumpeduncular scales (vs. 10) (Ref. 104905).
Body shape (shape guide): fusiform / normal.
Life cycle and mating behavior
परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | अंडे | Fecundity | लार्वा
Mendonça, M.B. and A.L. Netto-Ferreira, 2015. New species of Characidium (Characiformes: Crenuchidae) from the Rio Tapajós and Rio Xingu drainages, Pará, Brazil. Zootaxa 4021(1):187-194. (Ref. 104905)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
साधन
Special reports
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इंटरनेट स्रोत
Estimates based on models
Phylogenetic diversity index (संदर्भ
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00514 - 0.02450), b=3.04 (2.87 - 3.21), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trophic level (संदर्भ
69278): 3.2 ±0.3 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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