Classification / Names
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Characiformes (Characins) >
Acestrorhamphidae (American tetras) > Hyphessobryconinae
Etymology: Hyphessobrycon: Greek, hyphesson, -on, -on = a little smaller + Greek, bryko = to bite (Ref. 45335).
Environment: milieu / climate zone / djupintervall / distribution range
Ekologi
; sötvatten bottenlevande; pH range: 4.0 - 5.5. Tropical; 27°C - 28°C (Ref. 132985)
South America: Brazil, Central and lower Amazon basin (Ref. 132965).
Size / Vikt / Age
Könsmognad: Lm ? range ? - ? cm
Max length : 2.9 cm SL hane/ej könsbestämd; (Ref. 132985); 3.9 cm SL (female)
Short description
Bestämningsnycklar | Morfologi | Morfometri
Taggstrålar i ryggfenan (totalt) : 2; Mjukstrålar i ryggfenan (totalt) : 9 - 10; Taggstrålar i analfenan: 4; Mjukstrålar i analfenan: 17 - 21. This species is distinguish the species from its congeners and Hemigrammus species by the following characters (see the original description where the long diagnosis looks more as an identification key): humeral blotch very conspicuous, well-defined, and elongated with a shorter and posterior backward extension; longer anal fin, with a higher number of branched anal-fin rays (17?21 vs. 11?14); caudal peduncle blotch large, symmetric, extending into the basis of the middle caudal fin rays; etc. Other distinguishing characters are listed species by species (Ref. 132985).
Cross section: oval.
Life cycle and mating behavior
Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver
Lima, F.C.T., C. Silva-Oliveira, C. Oliveira and T.C. Faria, 2025. A new Hyphessobrycon (Characiformes: Acestrorhamphidae) from the Central Amazon basin, Brazil. Pap. Avulsos Zool. 65[e202565011]:1-15. (Ref. 132985)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Verktyg
Special reports
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Trofisk nivå (Ref.
69278): 3.2 ±0.31 se; based on food items.
Resiliens (Ref.
120179): Hög, lägsta populationsfördubblingstid mindre än 15 månader (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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