Actinopteri (ray-finned fishes) > Acanthuriformes
(Surgeonfishes) > Leiognathidae
(Slimys, slipmouths, or ponyfishes) > Leiognathinae
Etymology: Leiognathus: Greek, leios = smooth + Greek, gnathos = jaw (Ref. 45335). More on author: Valenciennes.
Equula berbis is considered as a nomen dubium of uncertain placement beyond the family level (Ref. 84470:20-21). Correct name Equulites oblongus; the types are in poor condition and placement in the genus Equulites is provisional (P. Chakrabarty pers.comm. tru S. Bogorodsky, 11/2010).
Environment: milieu / climate zone / depth range / distribution range
Marine; brackish; demersal; depth range 3 - 40 m (Ref. 30573). Tropical; 33°N - 10°S, 39°E - 133°E
Indo-West Pacific: Red Sea and the Gulf of Aden, off Zanzibar, along the Indian coasts and off Sri Lanka. Elsewhere, eastern Indian Ocean and southeast Asia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 11.0 cm TL male/unsexed; (Ref. 47581); common length : 9.0 cm TL male/unsexed; (Ref. 47581)
Inhabits inshore coastal waters (Ref. 47581). Feeds on small crustaceans and bivalves (Ref. 5213). Minimum depth range from Ref. 121815.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Woodland, D.J., S. Premcharoen and A.S. Cabanban, 2001. Leiognathidae. Slipmouths (ponyfishes). p. 2792-2823. In K.E. Carpenter and V.H. Niem (eds.) FAO species identification guide for fishery purposes. The living marine resources of the Western Central Pacific. Volume 5. Bony fishes part 3 (Menidae to Pomacentridae). Rome, FAO. pp. 2791-3380. (Ref. 47581)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
Fisheries: minor commercial
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 24.4 - 29.1, mean 28 °C (based on 1032 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01549 (0.00706 - 0.03397), b=2.96 (2.76 - 3.16), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Trophic level (Ref. 69278
): 3.3 ±0.41 se; based on food items.
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (11 of 100) .