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Trimma hayashii  Hagiwara & Winterbottom, 2007

Four-eye pygmy goby
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Trimma hayashii   AquaMaps   Data sources: GBIF OBIS
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Image of Trimma hayashii (Four-eye pygmy goby)
Trimma hayashii
Picture by Allen, G.R.

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

Actinopterygii (ray-finned fishes) > Perciformes (Perch-likes) > Gobiidae (Gobies) > Gobiinae
Etymology: Trimma: Greek, trimma, -atos = something crushed (Ref. 45335);  hayashii: Named for Mr. Masayoshi Hayashi..   More on author: Winterbottom.

Environment / Climate / Range Ecology

Marine; reef-associated; depth range 0 - 26 m (Ref. 58123).   Subtropical

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

Western Pacific: Japan to the Solomons.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 2.3 cm SL male/unsexed; (Ref. 58123)

Short description Morphology | Morphometrics

Dorsal spines (total): 7; Dorsal soft rays (total): 8-9; Anal spines: 1; Anal soft rays: 7 - 8. This species is characterized by the following: dorsal spine a little elongated or not; presence of a basal membrane between the pelvic fins; absence of predorsal scales; an interorbital but no postorbital trench; absence of cheek and opercular scales; fifth pelvic fin ray branched sequentially once or twice and, uniquely among known species of Trimma, has a bilateral, pupil-sized black spot on the branchiostegal membrane; live individuals with red spots, a little smaller than the pupil diameter on the head and nape, the posterior half of body has 3 yellow stripes separated by 2 grey stripes, and the black spots on the branchiostegal membranes are ocellated with white or blue (Ref. 58123).

Biology     Glossary (e.g. epibenthic)

Lives under corals in embayments, which are sometimes covered by siltation. Also found in caves and crevices of sheltered reefs (Ref. 90102). It often positions itself upside-down on the roof of the recess (Ref. 58123).

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

Main reference Upload your references | References | Coordinator | Collaborators

Hagiwara, K. and R. Winterbottom, 2007. Two new species of Trimma (Gobiidae) from the Western Pacific. Bull. Natl. Mus. Nat. Sci., Ser. A, Suppl. 1:163-174. (Ref. 58123)

IUCN Red List Status (Ref. 115185)

CITES (Ref. 108899)

Not Evaluated

Threat to humans

  Harmless




Human uses

FAO(Publication : search) | FisheriesWiki |

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Internet sources

BHL | Cloffa | 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 | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Scirus | SeaLifeBase | Tree of Life | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates of some properties based on models

Preferred temperature (Ref. 115969): 25.3 - 29.3, mean 28.7 (based on 1246 cells; Ref. 115970).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00891 (0.00412 - 0.01928), b=3.08 (2.91 - 3.25), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Resilience (Ref. 69278):  High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153):  Low vulnerability (10 of 100) .