Actinopteri (ray-finned fishes) > Atheriniformes
(Silversides) > Phallostethidae
Etymology: Phenacostethus: Greek,phenax, -akos = decpetive + Greek, stetho, stethion = brest; literal = to prick a little breast (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal; depth range 1 - 1 m (Ref. 13221), usually - m (Ref. ). Tropical; 0°C -
Asia: Baram River, Sarawak, Malaysian Borneo.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 1.4 cm SL male/unsexed; (Ref. 13221)
Inhabit clay and gravel bottom freshwater streams (Ref. 13221). Fertilization is internal and eggs are attached to the substrate via adhesive filaments (Ref. 43413). Maximum depth from Ref. 58018.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Pelvic fins in males are modified to form part of a complex thoracic clasping organ (Ref. 205).
Parenti, L.R., 1989. A phylogenetic revision of the phallostethid fishes (Atherinomorpha, Phallostethidae). Proc. Calif. Acad. Sci. 46(11):243-277. (Ref. 12768)
IUCN Red List Status (Ref. 124695)
Threat to humans
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=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), 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
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .