Issue
See Vari (1989:17) for detailed description.
Environment: milieu / climate zone / depth range / distribution range
Sinh thái học
; Nước ngọt Sống nổi và đáy. Tropical
South America: Essequibo, Orinoco, and Branco River basins, central portion of the Amazon River basin. Reported from Argentina (Ref. 9086).
Bộ gần gũi / Khối lượng (Trọng lượng) / Age
Maturity: Lm ?  range ? - ? cm
Max length : 12.9 cm SL con đực/không giới tính; (Ref. 34107)
Short description
Khóa để định loại | Hình thái học | Sinh trắc học
This species has small silvery scales; small mouth, and with a relatively large adipose fin (Ref. 10615).
A mud-eating fish, feeding on the organic matter that forms on submerged stones and higher plants (aufwuchs). Matures sexually under normal rain patterns with first spawning occurring during the first year. Individuals of approximately 16 cm total length have reached sexual maturity. A typical migratory fish, with periodical and prolific reproduction. It does not spawn in captivity nor does it react satisfactorily to the common induced spawning techniques used successfully with other species (Ref. 10615).
Life cycle and mating behavior
Maturities | Sự tái sinh sản | Spawnings | Egg(s) | Fecundities | Ấu trùng
Vari, R.P., 1989. Systematics of the neotropical characiform genus Psectrogaster Eigenmann and Eigenmann (Pisces: Characiformes). Smithson. Contri. Zool. No. 481, 43 p. (Ref. 34107)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Mức dinh dưỡng (Ref.
69278): 2.0 ±0.00 se; based on food items.
Thích nghi nhanh (Ref.
120179): Chiêù cao, thời gian nhân đôi của chủng quần tối thiểu là dưới 15 tháng (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).