Actinopteri (ray-finned fishes) > Ovalentaria/misc
(Various families in series Ovalentaria) > Ambassidae
Etymology: Tetracentrum: Greek, tetra = four + Latin, brachium = arm + Greek, kentron = sting (Ref. 45335). More on author: Norman.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic. Tropical; 22°C - 26°C (Ref. 12468); 8°S - 9°S
Oceania: creeks near Kokoda in south-eastern Papua New Guinea.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 11.0 cm SL male/unsexed; (Ref. 2847)
Inhabits high altitude streams 300-400 m in elevation (Ref. 2847) and occurring in areas with good vegetative cover (Ref. 6398). A carnivorous and egg laying species which tolerates the following aquarium conditions: pH=7.5, H=10, 26°C water temperature (Ref. 6398).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Allen, G.R., 1991. Field guide to the freshwater fishes of New Guinea. Publication, no. 9. 268 p. Christensen Research Institute, Madang, Papua New Guinea. (Ref. 2847)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Fisheries: of no interest; aquarium: commercial
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
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=0.00933 (0.00301 - 0.02897), b=3.03 (2.78 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.5 ±0.5 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 (15 of 100) .