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Ichthyococcus ovatus  (Cocco, 1838)

Lightfish
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Ichthyococcus ovatus   AquaMaps   Data sources: GBIF OBIS
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Image of Ichthyococcus ovatus (Lightfish)
Ichthyococcus ovatus
Picture by Costa, F.

Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Stomiiformes (Lightfishes and dragonfishes) > Phosichthyidae (Lightfishes)
Etymology: Ichthyococcus: Greek, ichthys = fish + Greek, kokkos = grain, berry (Ref. 45335).

Environment / Climate / Range Ecology

Marine; bathypelagic; depth range 0 - 2500 m (Ref. 74511), usually 200 - 500 m (Ref. 3988).   Deep-water, preferred ?; 46°N - 20°S, 180°W - 180°E

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

Circumglobal except North Pacific. Southwest Pacific: Australia (Ref. 7300) and New Zealand (Ref. 5755). Southeast Pacific: Chile (Ref. 9068). Eastern Atlantic: scattered records along Azores and the Mediterranean, from Portugal south to Canary Islands, also Namibia. Western Atlantic: between 20°N-45°N, including the Gulf of Mexico (Ref. 27768). South China Sea (Ref.74511).

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 5.5 cm SL male/unsexed; (Ref. 4470)

Short description Morphology | Morphometrics

Dorsal spines (total): 0; Dorsal soft rays (total): 11-12; Anal spines: 0; Anal soft rays: 15 - 17. Brown-yellow in color, flanks silver; fin bases and edges of scale pockets black (Ref. 3988). Both dorsal and ventral adipose fins present (Ref. 3988). Short, deep body, small mouth with lower jaw, microscopic teeth and tubular eye (Ref. 37473).

Biology     Glossary (e.g. epibenthic)

Does not exhibit diel vertical migrations (Ref. 4778). Spawning is probably year-round, peaking from late spring to early summer (Ref. 4778). Photophore complement complete at about 15-17 mm SL (Ref. 4778).

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

Main reference Upload your references | References | Coordinator | Collaborators

Badcock, J., 1984. Photichthyidae. p. 318-324. In P.J.P. Whitehead, M.-L. Bauchot, J.-C. Hureau, J. Nielsen and E. Tortonese (eds.) Fishes of the north-eastern Atlantic and the Mediterranean. volume 1. UNESCO, Paris. (Ref. 4778)

IUCN Red List Status (Ref. 115185)

  Least Concern (LC) 

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




Human uses

FAO(Publication : search) | FisheriesWiki | Sea Around Us

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Internet sources

BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishes of Iran | Fishtrace | GenBank(genome, nucleotide) | GloBI | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | National databases | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Scirus | SeaLifeBase | Tree of Life | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoological Record

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5078   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00933 (0.00375 - 0.02322), b=3.09 (2.87 - 3.31), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  3.4   ±0.45 se; Based on food items.
Resilience (Ref. 69278):  High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153):  Low vulnerability (10 of 100) .