Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopteri (ray-finned fishes) > Acanthuriformes
(Surgeonfishes) > Leiognathidae
(Slimys, slipmouths, or ponyfishes) > Leiognathinae
Etymology: Leiognathus: Greek, leios = smooth + Greek, gnathos = jaw (Ref. 45335); robustus: Named for the robust nature and large size of the species when compared to all congeners except L. equulus and L. fasciatus; an adjective.
Environment: milieu / climate zone / depth range / distribution range
Marine; pelagic-neritic. Tropical
Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri
Western Paciific: Singapore.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 18.3 cm SL male/unsexed; (Ref. 76780)
Morphology | Morphometrics
soft rays: 14. This species is distinguished from Leiognathus equulus (the only other species of leiognathid known to possess a non-sexually dimorphic light organ system) by the having no occipital hump (vs. pronounced hump); with a mildly sloping predorsal profile (vs. strongly curved, creating the image of an arched back); with frontal and lateral ethmoid ossifications that project anterodorsally and extend well anterior of the orbit to form a distinct preorbital protuberance (vs. slight bulge above orbit); and unexposed nuchal spine in lateral view (vs. exposed and projecting, particularly distally) (Ref. 76780).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Sparks, J.S. and P.V. Dunlap, 2004. A clade of non-sexually dimorphic ponyfishes (Teleostei: Perciformes: Leiognathidae): phylogeny, taxonomy, and description of a new species. Am. Mus. Novit. 3459:1-22. (Ref. 76780)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
CountriesFAO areasEcosystemsOccurrencesIntroductionsStocksEcologyDietFood itemsFood consumptionRation
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.0 ±0.4 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 (21 of 100) .