Klassifizierung / Names
Namen | Synonyme | Catalog of Fishes(Gattung, Arten) | ITIS | CoL | WoRMS | Cloffa
>
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..
Environment: milieu / climate zone / depth range / distribution range
Ökologie
; süßwasser benthopelagisch. Tropical
South America: Rio Xingu drainage and Rio Tapajós drainage in Brazil.
Size / Gewicht / Alter
Maturity: Lm ? range ? - ? cm
Max length : 2.5 cm SL Männchen/unbestimmt; (Ref. 104905)
Kurzbeschreibung
Bestimmungsschlüssel | Morphologie | Morphometrie
Rückenflossenweichstrahlen (insgesamt) : 11 - 12; Afterflossenweichstrahlen: 8 - 10; Wirbelzahl: 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).
Life cycle and mating behavior
Maturities | Fortpflanzung | Spawnings | Egg(s) | Fecundities | Larven
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 Rote Liste Status (Ref. 130435)
Bedrohung für Menschen
Harmless
Nutzung durch Menschen
Tools
Zusatzinformationen
Download XML
Internet Quellen
Estimates based on models
Phylogenetic diversity index (Ref.
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 (Ref.
69278): 3.2 ±0.3 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
