Gymnogeophagus caaguazuensis

Gymnogeophagus caaguazuensis Staeck, 2006

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> Cichliformes (Cichlids, convict blennies) > Cichlidae (Cichlids) > Geophaginae
Etymology: Gymnogeophagus: Greek, gymnos = naked + Greek, gea = the earth + Greek, phaegein, to eat (Ref. 45335)caaguazuensis: Named for the province of Caaguazú, Paraguay, the area of occurrence of the new species; an adjective, masculine form.

Environnement : milieu / zone climatique / profondeur / gamme de distribution Écologie

; eau douce benthopélagique. Tropical

Distribution Territoires | Zones FAO | Écosystèmes | Occurrences | Carte par point | Introductions | Faunafri

South America: Paraguay.

Taille / Poids / Âge

Maturité: Lm ?  range ? - ? cm
Max length : 8.6 cm SL mâle / non sexé; (Ref. 78439)

Description synthétique Clés d'identification | Morphologie | Morphométrie

This small mouthbrooding species possess the following characters: a conspicuous secondary sexual dimorphism; differs from its congeners in having a body that is comparatively deep, short caudal peduncle, lyreate caudal fin of males, scales in E1 row 26-28, and its small size, maximum length 8.63 cm SL (Ref. 78439).
Body shape (shape guide): short and / or deep.

Biologie     Glossaire (ex. epibenthic)

Prefers habitats that are bare sandy bottoms among rocky areas in small rivulets which may have a strong current during the rainy season. During the dry season and period of low water, this species is found in pools and ponds with more or less stagnant water. In February, water data collected at the type locality has pH 7.9; electrical conductivity 240 μS/cm; temperature 24.2 °C. Associated fish fauna included Phalloceros caudimaculatus (Poeciliidae), Rineloricaria sp. (Loricariidae) and two small characid species. This species displays a variety of parental care and mating systems ranging from mouthbrooding and polygyny to substrate spawning and monogamy. In the aquarium, breeding was observed and the species was azuensis found to be a delayed (larvophile) maternal mouthbrooder, where like several of its congeners, it starts reproduction like a substrate spawner, i. e. the parents initially spawn on a stone, but just prior to the hatching of the larvae the female picks up the eggs and then orally broods the larvae and young. Courting males, in from of ripe females, display a conspicuous quivering movement of their mouths caused by opening and closing the mouth with extremely high frequency and this peculiar behaviour during courtship seems to be a synapomorphy of the mouthbrooding species, as it has been observed only within this species complex (Ref. 78439).

Cycle de vie et comportement reproducteur Maturité | Reproduction | Frai | Œufs | Fécondité | Larves

Référence principale Téléchargez vos références | Références | Coordinateur : Kullander, Sven O. | Collaborateurs

Staeck, W., 2006. Gymnogeophagus caaguazuensis sp. n. - a new species of cichlid fish (Teleostei: Perciformes: Cichlidae) from the drainage of the lower río Paraguay in Paraguay. Zoologische Abhandlungen (Dresden) 56:99-105. (Ref. 78439)

Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))

  Menacé (EN) (B1ab(iii)+2ab(iii)); Date assessed: 16 December 2020

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

  Harmless





Utilisations par l'homme

Pêcheries: sans intérêt
FAO - Publication: search | FishSource |

Plus d'informations

Écologie trophique
Aliments (proies)
Composition du régime alimentaire
Consommation alimentaire
Rations alimentaires
Prédateurs
Écologie
Écologie
Dynamique des populations
Paramètres de croissance
Âges / tailles maximales
Longueur-poids rel.
Rel. longueur-longueur.
Fréquences de longueurs
Conversion de masse
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Abondance
Cycle de vie
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Maturité
Maturité/épines rel.
Fécondité
Frai
Agrégats de frai
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Distribution
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BRUVS - Vidéos
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génôme
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Systèmes d'aquaculture
Profils d'aquaculture
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Cas de ciguatera
Timbres, pièces de monnaie, divers
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AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | FishWatcher | CISTI | Catalog of Fishes: Genre, Espèce | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Arbre de Vie | Wikipedia: aller à, chercher | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimations basées sur des modèles

Indice de diversité phylogénétique
(Réf. 82804)
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.02344 (0.01123 - 0.04892), b=3.01 (2.83 - 3.19), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Niveau trophique
(Réf. 69278)
3.3   ±0.5 se; based on size and trophs of closest relatives
Résilience
(Réf. 120179)
Haut, temps minimum de doublement de population inférieur à 15 mois (Preliminary K or Fecundity.).
Vulnérabilité de la pêche
(Ref. 59153)
Low vulnerability (13 of 100). 🛈