Classification / Names
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Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Rivulidae (Rivulines) > Rivulinae
Etymology: Pituna: Tupí, pituna = black; in Goias, Brazil.
More on author: Costa.
Environment: milieu / climate zone / depth range / distribution range
Ekologi
; sötvatten bentopelagisk. Tropical
South America: temporary swamps of the middle rio Araguaia basin in Brazil.
Size / Vikt / Age
Maturity: Lm ?  range ? - ? cm
Max length : 3.3 cm SL hane/ej könsbestämd; (Ref. 57947); 2.8 cm SL (female)
Short description
Bestämningsnycklar | Morfologi | Morfometri
Mjukstrålar i ryggfenan (totalt) : 8 - 10; Mjukstrålar i analfenan: 14 - 16; Ryggkotor: 28 - 29. Can be distinguished from all its congeners by the following combination of characters: 25-29 scales in longitudinal series; pectoral fin with vertical rows of small dark gray spots or dark gray bars in males; frontal squamation F-patterned, anterior section of supraorbital series of neuromasts continuous; dark marks on flanks mainly longitudinally arranged in females; body depth 21.3-24.6% SL in males and 18.1-23.8% SL in females; caudal peduncle depth 15.5-17.1% SL in males and 14.7-15.7% SL in females; head depth 69.4-75.4% SL in males and 65.2-68.1% SL in females; and 4-5 bars or transverse rows of spots on pectoral fins in males (Ref. 57947).
Inhabits temporary swamps, usually in open areas of savanna vegetation (Ref. 57947).
Life cycle and mating behavior
Maturities | Reproduktion | Spawnings | Egg(s) | Fecundities | Larver
Costa, W.J.E.M., 2007. Taxonomy of the plesiolebiasine killifish genera Pituna, Plesiolebias and Maratecoara (Teleostei: Cyprinodontiformes: Rivulidae), with descriptions of nine new species. Zootaxa 1410:1-41. (Ref. 57947)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Verktyg
Special reports
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00977 (0.00315 - 0.03034), b=3.03 (2.78 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisk nivå (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Resiliens (Ref.
120179): Hög, lägsta populationsfördubblingstid mindre än 15 månader (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).