Classification / Names
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Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Rivulidae (Rivulines) > Cynolebiinae
Etymology: Cynolebias: Greek, kyon = dog + Greek, odous = teeth + Greek, lebias = a kind of small fish (Ref. 45335); oticus: From the Greek adjective oticus, meaning relative to ear, in reference to the continuous otic and post-otic series of neuromasts, which is diagnostic for this species.
Environment: milieu / climate zone / εύρος βάθους / distribution range
Οικολογία
; Γλυκού νερού βενθοπελαγικό. Tropical
South America: Verde river drainage, São Francisco River basin in Brazil.
Μέγεθος / Βάρος / Age
Γεννητική Ωρίμανση: Lm ? range ? - ? cm
Max length : 8.2 cm SL αρσενικό/απροσδιόριστο; (Ref. 97357); 7.1 cm SL (female)
Short description
Κλείδες προσδιορισμού | Μορφολογία | Μορφομετρία
Μαλακές ραχιαίες ακτίνες (συνολικά) : 15 - 18; Μαλακές εδρικές ακτίνες: 18 - 21; Σπόνδυλοι: 35 - 36. Cynolebias oticus can be diagnosed from all species of the C. perforatus group by having the otic and post-otic series of neuromasts often united, in close proximity when not united (vs. separated by interspace) and dorsal profile of the head always concave (vs. not concave at least in larger males above 7 cm SL (Ref. 97357).
Body shape (shape guide): fusiform / normal.
Occurs in temporary pools of the Verde river drainage, near the village of Pindaí. The region has been highly deforested in recent years, resulting to the extinction of some seasonal killifishes (Cynolebias gilbertoi, C. leptocephalus, Hypsolebias fulminantis) previously inhabiting the area. C. oticus can still be easily found in the area even under such condition (Ref. 97357).
Life cycle and mating behavior
Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Αβγά | Γονιμότητα | Προνύμφες
Costa, W.J.E.M., 2014. Six new species of seasonal killifishes of the genus Cynolebias from the São Francisco river basin, Brazilian Caatinga, with notes on C. porosus (Cyprinodontiformes: Rivulidae). Ichthyol. Explor. Freshwat. 25(1):79-96. (Ref. 97357)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Εργαλεία
Special reports
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Διαδικτυακές πηγές
Estimates based on models
Phylogenetic diversity index (Αναφ.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00891 (0.00396 - 0.02008), b=3.14 (2.94 - 3.34), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Τροφικό Επίπεδο (Αναφ.
69278): 3.3 ±0.4 se; based on size and trophs of closest relatives
Ελαστικότητα (Αναφ.
120179): Υψηλό, ελάχιστος χρόνος για διπλασιασμό πληθυσμού < 15 μήνες (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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