Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Cichliformes (Cichlids, convict blennies) >
Cichlidae (Cichlids) > Cichlasomatinae
Etymology: Mesonauta: Name not explained by Günther; probably from the Greek 'mesos' meaning middle or average, and 'nautes' for sailo (alternatively from Latin 'nauta' or sailor; the name perhaps refers to he position of dorsal fin origin posterior to the pelvic fin which was the author's principal diagnostic character; karipuna: Name 'karipuna' meaning 'mixed-indigenous people', from the self-designation of the indigenous people from the lower Oiapoque River region. A noun in apposition.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic. Tropical
South America: Brazil.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 6.6 cm SL male/unsexed; (Ref. 138332)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 14 - 15; Dorsal soft rays (total): 10 - 12; Anal spines: 8; Anal soft rays: 10 - 11; Vertebrae: 27. This species is distinguished from its congeners by the following set of characters: flank bars 5 to 8 not divided and not united with each other, or if divided, only near the ventral portion; lack of a reticulated pattern; and presence of a standard pattern of oblique and undivided bars (Ref. 138332).
Body shape (shape guide): short and / or deep; Cross section: compressed.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Oliveira, R.C.D., R. Britzke, C. Oliveira and W.J.D. Graça, 2025. A new species of Mesonauta (Cichliformes: Cichlinae) from the Amapá Grande River basin, Northern Brazil. Neotrop. Ichthyol. 23(3):e250103. (Ref. 138332)
IUCN Red List Status (Ref. 130435: Version 2025-2 (Global))
Threat to humans
Harmless
Human uses
Fisheries: of no interest
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02692 (0.01211 - 0.05983), b=3.02 (2.83 - 3.21), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.3 ±0.4 se; based on size and trophs of closest relatives
Resilience (Ref.
120179): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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