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Eupercaria/misc (Various families in series Eupercaria) >
Sciaenidae (Drums or croakers)
Eponymy: Rev Dr Christoph Samuel John (1747–1813) was a botanist and herpetologist and a medical missionary (1771–1813) at the Danish trading station of Tranquebar (now Tharangambadi), Tamil Nadu, not far from Madras (Chennai). [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
البيئة
بحري القاع; نطاق العمق 45 - 60 m (Ref. 9772). Tropical
Indo-West Pacific: along the coasts of Australia and Papua New Guinea, from about 124° to 144°E. Record from Java and Sumatra is more likely referable to other related species.
الحجم / وزن / العمر
Maturity: Lm ?  range ? - ? cm
Max length : 14.0 cm SL ذكر/ مختلط الجنس; (Ref. 9772); common length : 11.0 cm SL ذكر/ مختلط الجنس; (Ref. 9772)
الأشواك الظهرية (المجموع) : 11 - 12; الأشعة الظهرية الناعمة (المجموع) : 29 - 34; شوكة شرجية: 2; أشعه شرجية لينه: 7.
Inhabits coastal waters (Ref. 9772). Minimum depth from Ref. 58018.
Life cycle and mating behavior
النضج | التكاثر | وضع البيض | بيض | الخصوبة | Larvae
Sasaki, K. and P.J. Kailola, 1991. Johnius (Johnius) laevis, a new sciaenid from northern Australia and Papua New Guinea. Jap. J. Ichthyol. 38(2):119-123. (Ref. 9225)
IUCN Red List Status (Ref. 130435: Version 2024-1)
استخدامات بشرية
مصائد: غير مهمة تجارياً
أدوات
تقارير خاصة
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مصادر علي الأنترنت
Estimates based on models
Preferred temperature (Ref.
123201): 24.4 - 28.3, mean 27.3 °C (based on 43 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00891 (0.00412 - 0.01928), b=3.08 (2.91 - 3.25), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
مستوى غذائي (Ref.
69278): 3.4 ±0.4 se; based on size and trophs of closest relatives
المرونه (Ref.
120179): عالي, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع أقل من 15 شهر (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).