Classification / Names
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Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Rivulidae (Rivulines) > Rivulinae
Etymology: ribeirensis: The specific names is in reference to the occurrence of the new species in the Ribeira de Iguape river basin, southeastern Brazil...
Environment: milieu / climate zone / depth range / distribution range
Écologie
; eau douce benthopélagique. Tropical
South America: Ribeira de Iguape river basin in Brazil.
Taille / Poids / Âge
Maturity: Lm ?  range ? - ? cm
Max length : 2.9 cm SL mâle / non sexé; (Ref. 102354); 3.4 cm SL (female)
Description synthétique
Morphologie | Morphométrie
Rayons mous dorsaux (Total): 8-10; Rayons mous anaux: 14 - 17; Vertèbres: 33 - 35. i>Atlantirivulus ribeirensis can be diagnosed from all its congeners by the following combination of characters: lateral line divided into two sections (vs. single); lateral line with one neuromast by scale (vs. lateral line often interrupted by scales without neuromasts); caudal fin oval in both sexes (vs. sub-truncate at least in males); caudal fin in males with narrow dark grey stripe along whole fin margin (vs. never a similar color pattern); venter yellow; caudal-fin spot always conspicuous in females (vs. spot pale or absent in females above 2.8 cm SL) (Ref. 102354).
Occurs in shallow streams, 10 cm deep or less, within or close to dense forests of the Ribeira de Iguape river basin. These streams are characterized by light yellow or tea-like colored water. The bottom is composed of litter and sand. This is the only fish encountered in these streams (Ref. 102354).
Life cycle and mating behavior
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Costa, W.J.E.M., 2014. Four new species of the genus Atlantirivulus (Cyprinodontiformes: Rivulidae) from the Brazilian Atlantic Forest. Verteb. Zool. 64(1):9-21. (Ref. 102354)
Statut dans la liste rouge de l'IUCN (Ref. 130435)
Menace pour l'homme
Harmless
Utilisations par l'homme
Plus d'informations
Noms communsSynonymesMétabolismePrédateursÉcotoxicologieReproductionMaturitéFraiRassemblement de ponteFéconditéŒufsDéveloppement de l'œuf
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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).
Niveau trophique (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Résilience (Ref.
120179): Haut, temps minimum de doublement de population inférieur à 15 mois (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).