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Cichliformes (Cichlids, convict blennies) >
Cichlidae (Cichlids) > Geophaginae
Etymology: Dicrossus: Greek, di = two + Greek, krossoi = tassel (Ref. 45335); gladicauda: The specific name is derived from the Latin gladius, meaning sword, and cauda, meaning tail, alluding to the sword-like streamer of the dorsal lobe of the caudal fin in adult males.
Taxonomic Remarks
Species name erroneously spelled gla*u*dicauda in CofF (February, 2010).
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
; eau douce benthopélagique; pH range: 4.4 - ?. Tropical; 24°C - ? (Ref. 76847)
South America: lower río Atabapo drainage in Colombia.
Taille / Poids / Âge
Maturité: Lm ?  range ? - ? cm
Max length : 4.2 cm SL mâle / non sexé; (Ref. 76847)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Épines dorsales (Total) : 14 - 15; Rayons mous dorsaux (Total) : 8; Épines anales: 3; Rayons mous anaux: 6 - 7. Distinguished from all congeners by the conspicuously asymmetrical caudal fin characterized by the long filamentous streamer of its dorsal lobe in adult males. Most similar to Dicrossus filamentosus, but can be differentiated by having a lyreate caudal fin, both the marginal rays of the dorsal and the ventral part of caudal fin are distally produced into a filamentous streamer (Ref. 76847).
Body shape (shape guide): elongated.
Found in a typical blackwater habitat with clear, acidic and very soft tea-colored water, with total and temporary hardness <1° dH (Ref. 76847). Encountered along the bank of small rivulet in zones of extremely shallow water, approximately between 10 and 50 cm depth, where this species occurs either in a layer of dead leaves covering the bottom of the bank side or among the submerged terrestrial vegetation (Ref. 76847).
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Schindler, I. and W. Staeck, 2008. Dicrossus gladicauda sp. N.- a new species of crenicarine dwarf cichlids (Teleostei: Perciformes: Cichlidae) from Colombia, South- America. Vertebrate Zoology 58(1):67-73. (Ref. 76847)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Menacé (EN) (B1ab(iii)); Date assessed: 23 October 2020
Menace pour l'homme
Harmless
Utilisations par l'homme
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Estimations basées sur des modèles
Indice de diversité phylogénétique (Réf. 82804) |
PD50 = 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00724 (0.00280 - 0.01877), b=3.13 (2.91 - 3.35), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Niveau trophique (Réf. 69278) |
3.2 ±0.4 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 (10 of 100). 🛈 |