Classification / Names
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Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Rivulidae (Rivulines) > Rivulinae
Etymology: illuminatus: From the Latin illuminatus, meaning illuminated, in reference to the bright blue color of male flank.
More on author: Costa.
Environment: milieu / climate zone / depth range / distribution range
Οικολογία
; Γλυκού νερού βενθοπελαγικό; pH range: 5.9 - ?. Tropical
South America: swamp adjacent to córrego da Queixada, rio dos Bois drainage, rio Paraná basin in Brazil.
Μέγεθος / Βάρος / Age
Maturity: Lm ? range ? - ? cm
Max length : 2.9 cm SL αρσενικό/απροσδιόριστο; (Ref. 78126); 3.3 cm SL (female)
Short description
Κλείδες προσδιορισμού | Μορφολογία | Μορφομετρία
Ραχιαίες άκανθες (συνολικά) : 0; Μαλακές ραχιαίες ακτίνες (συνολικά) : 9 - 11; Εδρικές άκανθες: 0; Μαλακές εδρικές ακτίνες: 12 - 14; Σπόνδυλοι: 30 - 31. Differs from all other species of the subgenus Melanorivulus by the possession of six pelvic-fin rays. Can be diagnosed by the unique combination of the following characters: entire flank with longitudinal rows of red dots; head with reduced black pigmentation; presence of a longitudinally elongated white mark above caudal spot in females, vertically elongate spots on caudal fin, often forming bars; dorsal and anal fins in males rounded; caudal fin with 32-33 rays; scales in longitudinal series 33-35; scales in transverse series 8; dorsal-fin origin in vertical through base of 7th or 8th anal-fin ray; and tip of pelvic fin reaching between base of 1st and 3rd anal-fin rays in males (Ref. 78126).
Found in interconnected pools, about 30 cm deep, with clear water (Ref. 78126).
Life cycle and mating behavior
Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Αβγά | Γονιμότητα | Προνύμφες
Costa, W.J.E.M., 2007. Rivulus illuminatus, a new killifish from the serra dos Caiapós, upper rio Paraná basin, Brazil (Teleostei: Cyprinodontiformes: Rivulidae). Ichthyol. Explor. Freshwat. 18(3):193-198. (Ref. 78126)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
Εργαλεία
Special reports
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Διαδικτυακές πηγές
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=0.00661 (0.00305 - 0.01429), b=3.10 (2.91 - 3.29), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Τροφικό Επίπεδο (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Ελαστικότητα (Ref.
120179): Υψηλό, ελάχιστος χρόνος για διπλασιασμό πληθυσμού < 15 μήνες (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
