Actinopteri (ray-finned fishes) > Gobiiformes
(Gobies) > Gobiidae
(Gobies) > Gobiinae
Etymology: Hetereleotris: Greek, heteros = other + The name of a Nile fish, eleotris (Ref. 45335); exilis: Named for its slender body.(Latin 'exilis' meaning slender.
Environment: milieu / climate zone / depth range / distribution range
Marine; benthopelagic; depth range - 53 m (Ref. 84003), usually - m (Ref. ). Subtropical; 0°C -
Northwest Pacific: Ryukyu Is., Japan..
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 2.2 cm SL (female)
Morphology | Morphometrics
soft rays: 11;
Vertebrae: 27. This species differs from its congeners in having the following set of characters: D VI-I,12; A I,11; pelvic-fin rays I,5 with the innermost (= fifth) segmented pelvic-fin ray unbranched, long, subequal to preceding ray in length; elongated body, depth at anal-fin origin 11.9% of SL; cycloid scales, restricted on posterior part of body (ca. 14-15 longitudinal scales); sensory canals and associated pores on head absent (Ref. 84003).
The holotype, a mature female with numerous developed eggs in the ovary, was dredged at
53 m depth. No habitat information is known (Ref. 84003).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Shibukawa, K., 2010. Hetereleotris exilis, a new goby (Teleostei, Perciformes, Gobiidae) from the Ryukyu Islands, Japan. Bull. Natl. Mus. Nat. Sci., Ser. A, (Suppl. 4):89-95. (Ref. 84003)
IUCN Red List Status (Ref. 124695)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 20.4 - 23.4, mean 21.7 °C (based on 26 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01023 (0.00475 - 0.02204), b=3.03 (2.85 - 3.21), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.1 ±0.2 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 (10 of 100) .