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Siluriformes (Catfishes) >
Callichthyidae (Callichthyid armored catfishes) > Callichthyinae
Etymology: Hoplosternum: Greek, hoplon = weapon + Greek, sternon = chest (Ref. 45335).
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; non migratori (Ref. 126106); distribuzione batimetrica 1 - ? m (Ref. 11225). Subtropical; 18°C - 26°C (Ref. 2060); 11°N - 37°S
South America: Most Cis-Andean South American river drainages north of Buenos Aires, Argentina (Ref. 37395). Introduced in the USA (Ref. 104645).
Lunghezza alla prima maturità / Dimensione / Peso / Età
Maturità: Lm 16.7 range ? - ? cm
Max length : 26.3 cm TL maschio/sesso non determinato; (Ref. 104645); Età massima riportata: 4 anni (Ref. 51639)
Breve descrizione
Chiavi di identificazione | Morfologia | Morfometria
Obligate air-breathing (Ref. 126274); Adults inhabit swamps (Ref. 11225). During the rainy season, adults consume a great quantity of chironomids associated with detritus. During the dry season, they feed mostly on terrestrial insects, micro-crustaceans, aquatic Diptera, and detritus. They absorb a great quantity of anaerobic bacteria from the substrate (Ref. 27188). First reproduction occurs after one year (Ref. 35381). Used to be cultured commercially in Guyana (Ref. 7306). Cultured in Trinidad on a semi-commercial scale (Ref. 11225).
Reproduction begins with the rainy season (December-January). The male, at times helped by the female, builds a nest made of a cluster of mucus bubbles and vegetal matter. Responding to a nuptial parade, the female lays down her eggs (5,000 to 20,000, measuring1.8 mm in diameter) which are fertilized by sprinkling sperm previously collected in her mouth. The male guards the eggs during incubation and becomes very aggressive (Ref. 35381).
Reis, R.E., 1997. Revision of the neotropical catfish genus Hoplosternum (Ostariophysi: Siluriformes: Callichthyidae), with the description of two new genera and three new species. Ichthyol. Explor. Freshwat. 7(3-4):299-326. (Ref. 26144)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Pesca: commerciale; Acquacoltura: commerciale; Acquario: Commerciale
Strumenti
Rapporti speciali
Scarica XML
Fonti Internet
Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio.
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02089 (0.01548 - 0.02819), b=2.98 (2.89 - 3.07), in cm total length, based on LWR estimates for this species (Ref.
93245).
Livello trofico (Fonte Biblio.
69278): 2.7 ±0.0 se; based on diet studies.
Resilienza (Fonte Biblio.
120179): Medio, tempo minimo di raddoppiamento della popolazione 1.4 - 4.4 anni (tmax=4; K=0.6-1.3; Fec = 5,000).
Vulnerabilità della pesca (Ref.
59153): Low vulnerability (16 of 100).
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