Actinopteri (ray-finned fishes) > Gobiiformes
(Gobies) > Gobiidae
(Gobies) > Gobiinae
Etymology: Platygobiopsis: Greek, platys = flat + Latin, gobius = gudgeon + Greek, opsis = appearance (Ref. 45335); tansei: Named 'Tansei' for the research vessel Tanseimaru of the Ocean Research Institute, University of Tokyo (or Japan Marine Science and Technology Center) for collecting many Suruga Bay specimens including the holotype; noun in apposition.
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range 60 - 136 m (Ref. 75206). Temperate
Northwest Pacific: Japan.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 4.7 cm SL male/unsexed; (Ref. 75206)
Morphology | Morphometrics
soft rays: 12 - 14;
Vertebrae: 26. This species is distinguished by the following characters: D VI, I, 13-14; outer gill rakers on first gill arch 0+9-10; no chin barbel; predorsal scales reaching anteriorly to transverse line through middle of operculum; no scales from pectoral-fin base; cephalic sensory-canal pores absent; pelvic-fin frenum absent (Ref. 75206).
A true benthic species in the sloping sandy mud bottoms, often residing in the bottom sediment itself. In Suruga Bay, P. tansei was often found in beam trawl collections containing a lot of sandy mud sediments, probably due to the less than flat bottom configuration of the habitat (Ref. 75206).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Okiyama, M., 2008. Platygobiopsis tansei, a new species of dorso-ventrally flattened gobiid fish from Southern Japan. Bull. Natl. Mus. Nat. Sci. Ser. A. Suppl. 2:85-96. (Ref. 75206)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00955 (0.00454 - 0.02011), b=3.05 (2.88 - 3.22), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.2 ±0.3 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.).
Vulnerability (Ref. 59153
): Low vulnerability (11 of 100) .