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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.
More on author: Tanaka.
Environment: milieu / climate zone / depth range / distribution range
Ökologie
seewasser benthopelagisch. Temperate
Northwest Pacific: Japan, China, Taiwan.
Size / Gewicht / Alter
Maturity: Lm ?  range ? - ? cm
Max length : 22.0 cm SL Männchen/unbestimmt; (Ref. 559)
Rückenflossenstacheln (insgesamt) : 10; Rückenflossenweichstrahlen (insgesamt) : 28 - 31; Afterflossenstacheln: 2; Afterflossenweichstrahlen: 7; Wirbelzahl: 25. Swim bladder hammer-shaped with a series of arborescent appendages along its sides. Lower jaw with a row of enlarged teeth. Jaws short. Last pleural rib on the 11th vertebra.
Found in muddy and sandy-muddy bottoms (Ref. 43239).
Life cycle and mating behavior
Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven
Sasaki, K. and K. Amaoka, 1989. Johnius distinctus (Tanaka, 1916), a senior synonym of J. tingi (Tang, 1937) (Perciformes, Sciaenidae). Jap. J. Ichthyol. 35(4):466-468. (Ref. 10085)
IUCN Rote Liste Status (Ref. 130435: Version 2024-2)
Bedrohung für Menschen
Harmless
Nutzung durch Menschen
Tools
Zusatzinformationen
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Estimates based on models
Preferred temperature (Ref.
123201): 21.5 - 26.7, mean 25 °C (based on 72 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01148 (0.00693 - 0.01903), b=3.08 (2.94 - 3.22), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.5 ±0.4 se; based on size and trophs of closest relatives
Widerstandsfähigkeit (Ref.
120179): hoch, Verdopplung der Population dauert weniger als 15 Monate. (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (17 of 100).