Actinopterigi (pesci con pinne raggiate) >
Perciformes (Perch-likes) >
Sciaenidae (Drums or croakers)
Etymology: Pseudotolithus: Greek, pseudes = false + greek, otos = ear + Greek, lithos = stone (Ref. 45335).
Ambiente / Clima / Range
Ecologia
; marino demersale; distribuzione batimetrica 0 - 70 m (Ref. 3593). Tropical, preferred 26°C (Ref. 107945); 27°N - 22°S
Eastern Atlantic: west coast of Africa, from Morocco to Angola, but rare north of Senegal (Ref. 57396). Also reported from Namibia (Ref. 3593).
Length at first maturity / Size / Peso / Age
Maturity: Lm 35.0, range 28 - ? cm
Max length : 114 cm TL maschio/sesso non determinato; (Ref. 40637); common length : 50.0 cm TL maschio/sesso non determinato; (Ref. 3593); Peso massimo pubblicato: 12.0 kg (Ref. 40637)
Spine dorsali (totale): 11; Raggi dorsali molli (totale): 28-33; Spine anali 2; Raggi anali molli: 7. Diagnosis: large fish, elongate and compressed; eyes small; snout short; mouth large and oblique; lower jaw prominent; both jaws with bands of villiform teeth (upper jaw with teeth in outer row larger and sharper, including a pair of large median canines, lower jaw with teeth in inner row larger and sharper); 6 pores on chin and 5 marginal pores on snout; gill rakers long and slender, longer than gill filaments at angle of 1st gill arch; dorsal fin long and deeply notched; second anal fin spine rather short and slender, attaining about 2/3 of the length of 1st soft ray and comprised over 3 times in head length; caudal fin pointed; scales weakly ctenoid on body, cycloid on snout and suborbital region; lateral line extending to end of caudal fin; swim bladder carrot-shaped, its front end with a pair of appendices subdividing into an anterior group of short branches and 2 posterior groups of long, slender tubules, one of them ventral, the other dorso-lateral and longer, bordering the bladder throughout its length (Ref. 57396).
Coloration: silvery grey, with series of small dark spots following scale rows, oblique on anterior part of back and sides, horizontal posteriorly; black spot at tip of spinous part of dorsal fin; pelvics and anal fin more or less dark yellowish; caudal fin dark; inside of gill cover black (Ref. 57396).
Found in coastal waters over muddy, sandy or rocky bottoms. Smaller individuals found in shallow waters, but rarely entering estuaries. Feed on fish, shrimps and crabs (Ref. 28587). Spawn from November to March in waters of 22 to 25°C in the Gulf of Guinea. Most economically important demersal fish in West African waters.
Life cycle and mating behavior
Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve
Chao, L.N. and E. Trewavas, 1990. Sciaenidae. p. 813-826. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 2. (Ref. 3593)
IUCN Red List Status (Ref. 115185)
CITES (Ref. 94142)
Not Evaluated
Threat to humans
Harmless
Human uses
Pesca: scarso interesse commerciale; Pesce da pesca sportiva: si
Informazioni ulteriori
BibliografiaAcquacolturaProfilo di acquacolturaVarietàGeneticaFrequenze allelicheEreditarietàMalattieElaborazioneMass conversion
CollaboratoriImmaginiStamps, CoinsSuoniCiguateraVelocitàModalità di nuotoArea branchialeOtolithsCervelliVista
Strumenti
Special reports
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Fonti Internet
Estimates of some properties based on models
Phylogenetic diversity index (Ref.
82805): PD
50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Trophic Level (Ref.
69278): 3.8 ±0.71 se; Based on food items.
Resilienza (Ref.
69278): Medio, tempo minimo di raddoppiamento della popolazione 1.4 - 4.4 anni (K=0.33; tmax=8; assuming tm=2).
Vulnerability (Ref.
59153): Moderate vulnerability (42 of 100) .
