Actinopteri (ray-finned fishes) > Clupeiformes
(Herrings) > Engraulidae
(Anchovies) > Coiliinae
Etymology: Thryssa: Greek, thrissa, -es = shad (Ref. 45335).
More on author: Roberts.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; pelagic. Tropical; 6°S - 9°S
Oceania: known only from the Fly River, Papua New Guinea.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 12.0 cm SL male/unsexed; (Ref. 2847)
Morphology | Morphometrics
soft rays: 29 - 36. Belly with 17 to 19 + 10 or 11 = 27 to 29 keeled scutes from isthmus to anus. Maxilla short, not quite reaching to hind border of pre-operculum; first supra-maxilla short, not more than half length of second. No black area behind upper part of gill opening.
Inhabits turbid channels of large rivers, also lakes and swampy backwaters (Ref. 2847). The very high number of gillrakers suggests filter-feeding habit (Ref. 189). Feeds on plankton including calanoid copepods (Ref. 2847).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Whitehead, P.J.P., G.J. Nelson and T. Wongratana, 1988. FAO Species Catalogue. Vol. 7. Clupeoid fishes of the world (Suborder Clupeoidei). An annotated and illustrated catalogue of the herrings, sardines, pilchards, sprats, shads, anchovies and wolf-herrings. FAO Fish. Synop. 125(7/2):305-579. Rome: FAO. (Ref. 189)
IUCN Red List Status (Ref. 125652)
Endangered (EN) (B1ab(i,ii,iii,v)+2ab(i,ii,iii,v)); Date assessed: 17 July 2017
Threat to humans
Fisheries: subsistence fisheries
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00437 (0.00184 - 0.01038), b=3.10 (2.92 - 3.28), in cm total length, based on LWR estimates for this Genus-BS (Ref. 93245
Trophic level (Ref. 69278
): 3.0 ±0.00 se; based on food items.
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .
Climate Vulnerability (Ref. 125649
): (0 of 100) .