Teleostei (teleosts) >
Beloniformes (Needle fishes) >
Belonidae (Needlefishes)
Etymology: Pseudotylosurus: Greek, pseudes = false + Greek, tylos = callus + Greek, oura = tail (Ref. 45335).
More on author: Günther.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; pelagic; depth range 0 - ? m. Tropical
South America: upper Amazon River (Peru and Ecuador) and the Paraná and the Paraguay in Brazil.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 29.8 cm SL male/unsexed; (Ref. 40653)
Oviparous (Ref. 205). Eggs may be found attached to objects in the water by tendrils on the egg's surface (Ref. 205).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Lovejoy, N.R. and B.B. Collette, 2003. Belonidae (Needlefishes). p. 586-590. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 40653)
IUCN Red List Status (Ref. 130435: Version 2025-2 (Global))
Threat to humans
Harmless
Human uses
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Special reports
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Internet sources
Estimates based on models
Phylogenetic diversity index (Ref. 82804) |
PD50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00126 (0.00056 - 0.00281), b=3.11 (2.93 - 3.29), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Trophic level (Ref. 69278) |
4.0 ±0.6 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.). |
Fishing Vulnerability (Ref. 59153) |
Low vulnerability (20 of 100). 🛈 |