Teleostei (teleosts) >
Centrarchiformes (Basses) >
Terapontidae (Grunters or tigerperches)
Etymology: Scortum: Latin, scortum = harlot (Ref. 45335).
Eponymy: Walter Hill (1820–1904) was a Scottish botanist who became the first Curator (aka Superintendent) of the Brisbane Botanical Gardens. [...] (Ref. 128868), visit book page.
More on author: Castelnau.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; brackish; demersal; potamodromous (Ref. 51243). Tropical; 17°S - 23°S
Oceania: Endemic to Australia. Known from the northern Gulf of Carpentaria drainages, Queensland, Australia; Norman, Dawson and Fitzroy Rivers.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 35.0 cm SL male/unsexed; (Ref. 44894); common length : 25.0 cm SL male/unsexed; (Ref. 5259); max. published weight: 1.0 kg (Ref. 2906)
Adults inhabit a variety of conditions ranging from brackish estuaries to clear or turbid flowing streams and still pools. Usually in schools feeding on benthic mussels and algae (Ref. 5259, 44894). Temp. range: 12-37.5°C (Ref. 7318, 44894). Form shoals near the bottom (Ref. 44894). Spawn in summer floods (November, water temp. of 26-28°C) after nocturnal upstream migration. Eggs are guarded and fanned by the male parent (Ref. 205). Maturity: M, 25 cm SL; F, >30 cm SL; 50,000 eggs per kg; non-adhesive eggs, 2.5-4.0 mm diameter (Ref. 7317).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Eggs are guarded and fanned by the male parent (Ref. 205).
Paxton, J.R., D.F. Hoese, G.R. Allen and J.E. Hanley, 1989. Pisces. Petromyzontidae to Carangidae. Zoological Catalogue of Australia, Vol. 7. Australian Government Publishing Service, Canberra, 665 p. (Ref. 7300)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Human uses
Fisheries: of no interest
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01660 (0.00638 - 0.04320), b=2.99 (2.76 - 3.22), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 2.5 ±0.20 se; based on food items.
Resilience (Ref.
120179): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (33 of 100).