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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.
More on author: Castelnau.
Taxonomic Remarks
Redescription by Kullander & Silfvergrip (1991: 424), with bibliography, diagnosis, description, distribution, and illustrations.
Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied
Ecologie
; zoet water benthopelagisch; pH range: 5.5 - ?. Tropical; 22°C - ? (Ref. 40602)
South America: Amazon River basin, in the Tocantins and Xingu River basins.
Grootte / Gewicht / Leeftijd
Maturiteit: Lm ?  range ? - ? cm
Max length : 7.1 cm SL mannelijk / geslacht onbekend; (Ref. 36377)
The collection area was described by Werner (1990:55-58) as a small stream south of Sao Jose do Xingu (NRM 14605) - a narrow blackwater creek widening at the collecting site and in places 1 m deep; the bottom substrate was sand and mud in part with dense stands of aquatic plants; temperature was 22°C, pH 5.5, conductivity 5 μS. Specimens were taken from quiet shore areas with reed and grass (Ref. 86444).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Both parents care for eggs and larvae. Larvae are deposited in plants near the surface (40602).
Kullander, S.O., 2003. Cichlidae (Cichlids). p. 605-654. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 36377)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))
Gevaar voor de mens
Harmless
Gebruik door de mens
Visserij: van geen belang
Tools
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Schattingen op basis van modellen
Fylogenetische diversiteitsindex (Ref. 82804) |
PD50 = 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.02692 (0.01195 - 0.06065), b=3.03 (2.84 - 3.22), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Trofisch niveau (Ref. 69278) |
3.3 ±0.42 se; based on food items. |
Weerstandsvermogen (Ref. 120179) |
Hoog, minimale populatieverdubbelingstijd minder dan 15 maanden (Preliminary K or Fecundity.). |
Kwetsbaarheid van de visserij (Ref. 59153) |
Low vulnerability (11 of 100). 🛈 |