Johnius trewavasae, Trewavas croaker : fisheries

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Johnius trewavasae Sasaki, 1992

Trewavas croaker
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Johnius trewavasae   AquaMaps   Data sources: GBIF OBIS
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Image of Johnius trewavasae (Trewavas croaker)
Johnius trewavasae
Picture by Chao, N.L.

Classification / Names Nombres comunes | Sinónimos | Catalog of Fishes(Género, Especie) | ITIS | CoL | WoRMS | Cloffa

> 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). [...] Dr Ethelwynn Trewavas (1900–1993) was an eminent British ichthyologist. [...] (Ref. 128868), visit book page.

Environment: milieu / climate zone / rango de profundidad / distribution range Ecología

marino bentopelágico; rango de profundidad 1 - 40 m (Ref. 9772). Tropical

Distribución Países | Áreas FAO | Ecosistemas | Ocurrencias, apariciones | Mapa de puntos | Introducciones | Faunafri

Western Pacific: Taiwan, Hong Kong, Shanghai and Singapore.

Tamaño / Peso / Age

Madurez: Lm ?  range ? - ? cm
Max length : 22.0 cm SL macho / no sexado; (Ref. 124713); common length : 14.0 cm SL macho / no sexado; (Ref. 9772); peso máximo publicado: 135.27 g (Ref. 124713)

Short description Claves de identificación | Morfología | Morfometría

Espinas dorsales (total) : 10 - 11; Radios blandos dorsales (total) : 24 - 27; Espinas anales: 2; Radios blandos anales: 7 - 8. Small species with a moderately elongate body. Dark mottled pattern dorsally, creamy white ventrally; scale pockets on dorsal side of head and body with broad, dark margins; spinous dorsal fin black, pectoral fins grey, pelvic fins pale (Ref. 9772).
Body shape (shape guide): fusiform / normal.

Biología     Glosario (por ej. epibenthic)

Inhabits shallow coastal waters (Ref. 9772).

Life cycle and mating behavior Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva

Main reference Upload your references | Referencias | Coordinador | Colaboradores

Sasaki, K., 1992. Two new and two resurrected species of the sciaenid genus Johnius (Johnius) from the West Pacific. Jap. J. Ichthyol. 39(3):191-199. (Ref. 10084)

IUCN Red List Status (Ref. 130435: Version 2025-1)

  Least Concern (LC) ; Date assessed: 14 February 2020

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Pesquerías: escaso valor comercial
FAO - Publication: search | FishSource |

Más información

Ecología Trófica
Food items (preys)
Composición de la dieta
consumo de alimento
Food rations
Despredadores
Ecología
Ecología
Home ranges
Population dynamics
Coeficiente del crecimiento para
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Reclutamiento
Abundancia
Life cycle
Reproducción
Madurez
Maturity/Gills rel.
Fecundidad
Puesta
Spawning aggregations
Huevos
Egg development
Larva
Dinámica larvaria
Distribución
Países
Áreas FAO
Ecosistemas
Ocurrencias, apariciones
Introducciones
BRUVS - Videos
Anatomy
Superficie branquial
Brain
Otolith
Physiology
Body composition
Nutrients
Consumo del oxígeno
Tipo de natación
Velocidad de natación
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Genética
Genome
Genética
Heterozygosity
heritabilidad
Human related
Aquaculture systems
Perfiles de acuicultura
Razas
Ciguatera cases
Stamps, coins, misc.
Outreach
Colaboradores
Taxonomy
Nombres comunes
Sinónimos
Morfología
Morfometría
Imágenes
Referencias
Referencias

Herramientas

E-book | Guía de campo | Claves de identificación | Asistente para frecuencias de tallas | Herramienta de ciclo de vida | Mapa de puntos | Catch-MSY |

Special reports

Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

Download XML

Summary page | Datos específicos | Nombres comunes | Photos

Fuentes de Internet

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: Género, Especie | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | Bases de datos nacionales | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Árbol de la vida | Wikipedia: Go, búsqueda | World Records Freshwater Fishing | Zoobank | Expediente Zoológico

Estimates based on models

Preferred temperature (Referencia 123201): 24.7 - 29.1, mean 28.4 °C (based on 648 cells).
Phylogenetic diversity index (Referencia 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00832 (0.00475 - 0.01456), b=3.10 (2.95 - 3.25), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
Nivel trófico (Referencia 69278):  3.5   ±0.4 se; based on size and trophs of closest relatives
Resiliencia (Referencia 120179):  Alto, población duplicada en un tiempo mínimo inferior a 15 meses (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (17 of 100). 🛈
Price category (Ref. 80766):   Medium.