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| Native range | All suitable habitat | Point map | Year 2050 |
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| This map was computer-generated and has not yet been reviewed. |
| Johnius grypotus AquaMaps Data sources: GBIF OBIS |
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Johnius grypotus
Picture by Shao, K.T.
Pictures | Google image
Picture by Shao, K.T.
Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) > 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: Richardson.
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: Richardson.
Environment: milieu / climate zone / depth range / distribution range Ecology
Marine; benthopelagic; depth range 25 - 110 m (Ref. 43239). Tropical
Distribution Territories | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri
Northwest Pacific: along the coasts of China and Taiwan, from the Gulf of Pohai to Hainan.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 20.8 cm TL male/unsexed; (Ref. 116958); max. published weight: 73.07 g (Ref. 116958)
Max length : 20.8 cm TL male/unsexed; (Ref. 116958); max. published weight: 73.07 g (Ref. 116958)
Short description Identification keys | Morphology | Morphometrics
Dorsal spines (total): 10 - 12; Dorsal soft rays (total): 24 - 48; Anal spines: 2; Anal soft rays: 7 - 9; Vertebrae: 24 - 26. Snout blunt. Interorbital space wide (8.0-9.7% SL). Anal soft rays usually eight. High gill raker count (6-7 + 1 + 10-14). Scales on throat ctenoid.
Body shape (shape guide): fusiform / normal.
Body shape (shape guide): fusiform / normal.
The most common species of Johnius (Johnius) in Chinese waters (Ref. 10101). Sandy-muddy bottoms and muddy bottoms from 25-110 m depth (Ref. 43239).
Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Main reference
Upload your references | References | Coordinator | Collaborators
Sasaki, K., 1990. Johnius grypotus (Richardson, 1846), resurrection of a Chinese sciaenid species. Jap. J. Ichthyol. 37(3):224-229. (Ref. 10101)
IUCN Red List Status (Ref. 130435: Version 2025-2 (Global))
Least Concern (LC) ; Date assessed: 26 September 2018
CITES
Not Evaluated
Threat to humans
Harmless
Human uses
FAO - Publication: search | FishSource |
More information
Ecology
Ecology
Ecology
Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Recruitment
Abundance
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Recruitment
Abundance
Life cycle
Reproduction
Maturity
Maturity/Gills rel.
Fecundity
Spawning
Spawning aggregations
Eggs
Egg development
Larvae
Larval dynamics
Reproduction
Maturity
Maturity/Gills rel.
Fecundity
Spawning
Spawning aggregations
Eggs
Egg development
Larvae
Larval dynamics
Anatomy
Gill area
Brain
Otolith
Gill area
Brain
Otolith
Physiology
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Genetics
Genome
Genetics
Heterozygosity
Heritability
Genetic Diversity
Genome
Genetics
Heterozygosity
Heritability
Genetic Diversity
Human related
Aquaculture systems
Aquaculture profiles
Strains
Ciguatera cases
Stamps, coins, misc.
Aquaculture systems
Aquaculture profiles
Strains
Ciguatera cases
Stamps, coins, misc.
Tools
Special reports
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Internet sources
AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | National databases | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoological Record
Estimates based on models
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Phylogenetic diversity index (Ref. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
| Bayesian length-weight | a=0.00813 (0.00464 - 0.01422), b=3.06 (2.91 - 3.21), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245). |
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Trophic level (Ref. 69278) |
3.4 ±0.4 se; based on size and trophs of closest relatives |
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Resilience (Ref. 120179) |
High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.). |
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Fishing Vulnerability (Ref. 59153) |
Low vulnerability (19 of 100). 🛈 |