Ophiocara macrostoma, Dark-fin gudgeon

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Ophiocara macrostoma Kobayashi & Sato, 2023

Dark-fin gudgeon
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drawing shows typical species in Butidae.

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Gobiiformes (Gobies) > Butidae (Gudgeon gobies)
Etymology: Ophiocara: Greek, ophis = serpent + Greek, kara = face (Ref. 45335); macrostoma: Name 'macrostoma' refers to the large mouth and relatively long jaw in this species.

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; freshwater; brackish; demersal; amphidromous (Ref. 133165). Subtropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Northwest Pacific: Japan (Ryukyu Arch.).

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 9.6 cm SL male/unsexed; (Ref. 133165)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 7; Dorsal soft rays (total): 7 - 8; Anal spines: 1; Anal soft rays: 6 - 8; Vertebrae: 26. This species is distinguished from congeneric species by the following set of characters: longitudinal row scales 33-36; transverse row scales 11-13; predorsal scales 21-25; snout length 9.7-11.1% of SL; upper jaw length 14.4-17.5% of SL; caudal fin length 27.9-40.4% of SL; opercular scales cycloid; body with two interrupted, vertical light brown bands, below dorsal fin and on caudal peduncle. Colouration: second dorsal fin with diffuse white spots; caudal fin dark, no spots; head and trunk of adults with brilliant blue or green spots; caudal fin base in juveniles with three distinct bright markings (Ref. 133165).
Body shape (shape guide): fusiform / normal; Cross section: oval.

Biology     Glossary (e.g. epibenthic)

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Kobayashi, H. and M. Sato, 2023. The genus Ophiocara (Teleostei: Butidae) in Japan, with descriptions of two new species. Ichthyol. Res. 71(1):119-153. (Ref. 133165)

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

Not Evaluated 

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Fisheries: of no interest
FAO - Publication: search | FishSource |

More information

Trophic ecology
Food items (preys)
Diet composition
Food consumption
Food rations
Predators
Ecology
Ecology
Home ranges
Population dynamics
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
Distribution
Countries
FAO areas
Ecosystems
Occurrences
Introductions
BRUVS - Videos
Anatomy
Gill area
Brain
Otolith
Physiology
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Genetics
Genome
Genetics
Heterozygosity
Heritability
Human related
Aquaculture systems
Aquaculture profiles
Strains
Ciguatera cases
Stamps, coins, misc.
Outreach
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Taxonomy
Common names
Synonyms
Morphology
Morphometrics
Pictures
References
References

Tools

E-book | Field guide | Length-frequency wizard | Life-history tool | Point map | Catch-MSY |

Special reports

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Summary page | Point data | Common names | Photos

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 | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Tree of Life | Wikipedia: Go, Search | Zoobank | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5312   [Uniqueness, from 0.5 = low to 2.0 = high].
Trophic level (Ref. 69278):  3.7   ±0.6 se; based on size and trophs of closest relatives
Resilience (Ref. 120179):  High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100). 🛈