Classificazione / Nomi
Nomi Comuni | Sinonimi | Catalog of Fishes(Genere, Specie) | ITIS | CoL | WoRMS | Cloffa
Taxonomic Remarks
See Reis (1997) for phylogeny and Reis (1998) for detailed description.
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
; acqua dolce demersale; pH range: 6.0 - 8.0; dH range: 5 - 19. Tropical; 18°C - 28°C (Ref. 1672)
South America: Amazon and Orinoco River basins, as well as coastal rivers of the Guianas and northern Brazil.
Dimensione / Peso / Età
Maturità: Lm ? range ? - ? cm
Max length : 17.0 cm SL maschio/sesso non determinato; (Ref. 121647); peso massimo pubblicato: 350.00 g (Ref. 27188)
Obligate air-breathing (Ref. 126274); Ubiquitous (Ref. 35381). Occurs in ponds (Ref. 11229), swamps and flooded savanna. May also occur in inland creeks with strong current. When the swamps are drained during the dry season, they burrow in the mud at a depth of 15-25 cm and remain there until the first rains. They hide only at the bottom of the marshes which remain always a little muddy even during the dry season. Today, they are presently captured with the net. Previously, fishermen drained the marshes in order to unearth the fish which had hidden there (Ref. 27188). Omnivore (Ref. 26543). Intestinal breathing, complementary to branchial breathing, enables them to adapt to extreme hypoxic conditions which occur in their biotopes. For these reasons, the relevant intestinal zone has a more reduced mucus epithelium as well as an increased blood system. In the dry season when swamps get dry, they sink deeper into the muddy substrate down to a depth of 20 cm. This way, they live at a slower pace, often in groups, until the next rainy season. At the end of October, the fishermen dig them up because they are appreciated for their flesh. At other times, they are fished with nets (Ref. 35381).
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
Male builds nests in shallow swamps or swamp forests during the rainy season.
Reis, R.E., P.-Y. Le Bail and J.H.A. Mol, 2005. New arrangement in the synonymy of Megalechis Reis, 1997 (Siluriformes: Callichthyidae). Copeia 2005(3):678-682. (Ref. 57766)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Pesca: scarso interesse commerciale; Acquario: Commerciale
Strumenti
Rapporti speciali
Scarica XML
Fonti Internet
Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio.
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02455 (0.01242 - 0.04852), b=2.96 (2.78 - 3.14), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Livello trofico (Fonte Biblio.
69278): 3.0 ±0.0 se; based on diet studies.
Resilienza (Fonte Biblio.
120179): Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.).
Vulnerabilità della pesca (Ref.
59153): Low vulnerability (11 of 100).
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