Actinopteri (ray-finned fishes) > Ovalentaria/misc
(Various families in series Ovalentaria) > Embiotocidae
Etymology: Ditrema: Greek, di = two + Greek, trema = hole (Ref. 45335); temminckii: The subspecific name is in reference to the geographic distribution of the subspecies. More on author: Bleeker.
More genetic evidence is needed to consider Ditrema temminckii pacificum Katafuchi & Nakabo, 2007 a separate species. Morphological details are given in the original description (Ref. 76763), and some genetic evidence in a wider study (Ref. 123766).
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range - m (Ref. ), usually - m (Ref. ). Temperate; 0°C -
Northwest Pacific: Japan, Korea Rep, and the Yellow Sea.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 24.0 cm SL male/unsexed; (Ref. 559); max. published weight: 144.20 g (Ref. 121534)
Morphology | Morphometrics
(total): 9 - 11;
soft rays: 25 - 27;
Vertebrae: 35 - 39. This subspecies possess the following characters: D IX-XI (mode 9-10); 18-22 (mode 19) scales below lateral line; relatively long base of dorsal fin (43.1-51.7, mean 48.0% SL); anterior suborbital area with a black oblique band; black spot or black crescentic marking on posteroventral corner of the preopercle; no black spot, (rarely with a small dark spot) on the anterior part of preopercle; spinous portion of dorsal fin mostly with black distal margin; without black line along anal-fin base; pelvic fin with a black line along posterior margin of pelvic-fin spine (rarely a black line with a black spot on uppermost end, or two black lines), two white lines on first ray, and membrane between fourth and fifth rays (Ref. 76763)..
Adults occur in sandy bottoms and rocky areas (Ref. 76763); also in areas with Sargassum (Ref. 559). Viviparous, female carries the developing young (Ref. 205).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Viviparous with 13 embryos. Young are born between May and June (Ref. 559). Female carries the developing young (Ref. 205).
Masuda, H. and G.R. Allen, 1993. Meeresfische der Welt - Groß-Indopazifische Region. Tetra Verlag, Herrenteich, Melle. 528 p. (Ref. 9137)
IUCN Red List Status (Ref. 124695)
Threat to humans
Fisheries: commercial; gamefish: yes
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=0.01380 (0.00724 - 0.02632), b=2.83 (2.67 - 2.99), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Trophic level (Ref. 69278
): 3.7 ±0.2 se; based on diet studies.
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Moderate vulnerability (41 of 100) .