>
Siluriformes (Catfishes) >
Ariidae (Sea catfishes) > Ariinae
Eponymy: Dr Eduard Gräffe (1833–1916) was born in Switzerland, died in part of the Austro-Hungarian Empire (Slovenia) but regarded himself as an Austrian. [...] (Ref. 128868), visit book page.
More on authors: Kner & Steindachner.
Environment: milieu / climate zone / distribuzione batimetrica / distribution range
Ecologia
marino; acqua dolce; salmastro demersale; pH range: 7.5 - 8.2; dH range: 18 - 30; anadromo. Tropical; 24°C - 32°C (Ref. 2059); 3°S - 19°S
Western Pacific: northern Australia and southern New Guinea.
Size / Peso / Age
Maturità: Lm ? range ? - ? cm
Max length : 60.0 cm SL maschio/sesso non determinato; (Ref. 44894)
Spine dorsali (totale) : 1; Raggi dorsali molli (totale) : 7; Spine anali: 0; Raggi anali molli: 15 - 19.
Body shape (shape guide): fusiform / normal.
Adults inhabit freshwater rivers and lagoons, as well as brackish estuaries and coastal marine waters. Can tolerate temperatures from 11°C to 38°C. Large groups of juveniles are often encountered (Ref. 44894). Feed on arthropods, insects, aquatic plants, mollusks, prawns, crayfish, fishes and bottom detritus. Nest is constructed among gravel where eggs are deposited forming a mound (Ref. 205). The only species among oral incubating ariids exhibiting no parental care (Ref. 205). Breeding takes place from September to February (Ref. 44894). Marine populations of A. graeffei appear to undertake extensive anadromous migrations associated with breeding, but no such movements were observed in the fluviatile population studied (Ref. 38559).
Life cycle and mating behavior
Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve
Nest is constructed among gravel where eggs are deposited forming a mound (Ref. 205). The only species among oral incubating Ariidae exhibiting no parental care (Ref. 205).
Allen, G.R., 1989. Freshwater fishes of Australia. T.F.H. Publications, Inc., Neptune City, New Jersey. (Ref. 5259)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Traumatogenic (Ref. 58010)
Human uses
Strumenti
Special reports
Download XML
Fonti Internet
Estimates based on models
Preferred temperature (Fonte Biblio.
123201): 26.7 - 28.7, mean 27.9 °C (based on 270 cells).
Phylogenetic diversity index (Fonte Biblio.
82804): PD
50 = 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00794 (0.00381 - 0.01658), b=3.08 (2.91 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Fonte Biblio.
69278): 3.6 ±0.2 se; based on diet studies.
Resilienza (Fonte Biblio.
120179): Medio, tempo minimo di raddoppiamento della popolazione 1.4 - 4.4 anni (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (49 of 100).
🛈
