Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Rivulidae (Rivulines) > Cynolebiinae
Etymology: Titanolebias: The name of the genus is composed of Titan and the Greek 'lebias' meaning ‘small fish', referring to the relative size of the fishes of this genus within Aplocheiloidei, bearing the largest species in this suborder of fishes, with T. elongatus reaching 15.5 cm SL (MACN 3826) and
T. monstrosus 15 cm (MNK P-3301).
commonly used to compose generic names of cyprinodontiform
fishes; calvinoi: Name 'calvinoi' in honor of Pablo Andres Calviño, in recognition of his notable contributions to Neotropical ichthyology and his pioneering efforts in the study and promotion of knowledge about killifish.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic; non-migratory. Subtropical
South America: Argentina.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 10.0 cm SL male/unsexed; (Ref. 137523)
Short description
Identification keys | Morphology | Morphometrics
Dorsal soft rays (total): 15 - 21; Anal soft rays: 20 - 24. This species is distinguished by the following set of characters: 5 pelvic-fin rays; 70-85 scales in the longitudinal series; 34 vertebrae; black and white intercalated blotches in the posterior portion of the dorsal fin; white iridescent spots on the basal portion of the anal and caudal fins; brownish-grey to greenish-grey flanks with iridescent whitish spots (Ref. 137523).
Body shape (shape guide): elongated; Cross section: oval.
This species is found in artificial channels 25 cm deep, with substrate composed of clay (Ref. 137523).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Alonso, Felipe, G.E. Teran, W.S.S. Alanís, M.M. Waldbillig, M.M. Montes, B. Bugeau, J.A. Barneche, M.I. Shimabukuro, F.G. Taboas, M. Maroli and M.J. Almeida, 2025. The rise of a Titan: a new species of the giant Titanolebias killifishes, and its phylogeny (Cyprinodontiformes: Rivulidae). Zoologischer Anzeiger 316:253-265. (Ref. 137523)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
Human uses
Fisheries: of no interest
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