Classification / Names
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Siluriformes (Catfishes) >
Loricariidae (Armored catfishes) > Hypoptopomatinae
Etymology: acicula: The specific name is from the Latim acicula which means needle, pin. This is used in reference to the narrowness of the snout compared to N. ephippia. A noun in apposition..
Environment: milieu / climate zone / depth range / distribution range
Ecologia
; acqua dolce demersale. Tropical
South America: lower rio Tapajós drainage in Brazil.
Size / Peso / Age
Maturity: Lm ? range ? - ? cm
Max length : 3.4 cm SL maschio/sesso non determinato; (Ref. 116855)
Short description
Chiavi di identificazione | Morfologia | Morfometria
Spine dorsali (totale) : 1; Raggi dorsali molli (totale) : 7; Raggi anali molli: 6. Nannoxyropsis acicula can be diagnosed from its congener N. ephippia by the absence of preopercle latero-sensory canal (vs. presence of sensory canal); and by enlarged odontodes on posterior margin of the parieto-supraoccipital, forming crest (vs. odontodes not enlarged or forming crest). It further differs from N. ephippia by having a longer head (34.8-39.4 vs. 29.4-33.5% SL), a narrower snout (width of snout measured at widest point of mouth opening (37.0-40.7 vs. 43.1-45.3% HL), a larger predorsal length (44.7-48.9 vs. 40.1-44.5% SL), a smaller dorsal interorbital distance (37.1-42.4 vs. 43.0-54.2% HL), 20-22 plates in median series of lateral plates (vs. 23), and 11-17 teeth on premaxilla (vs. 18-26) (Ref. 116855).
Collected from clear to blackwater creeks with moderate water current, bottom composed
of stones, gravel and mud or clay in parts, and moderate amounts of marginal vegetation (Ref. 116855).
Life cycle and mating behavior
Maturities | Riproduzione | Spawnings | Egg(s) | Fecundities | Larve
Delapieve, M.L.S., P.A. Lehmann and R.E. Reis, 2017. An appraisal of the phylogenetic relationships of Hypoptopomatini cascudinhos with description of two new genera and three new species (Siluriformes: Loricariidae). Neotrop. Ichthyol. 15(4):e170079. (Ref. 116855)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Strumenti
Special reports
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00759 (0.00337 - 0.01709), b=3.12 (2.93 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 2.3 ±0.1 se; based on size and trophs of closest relatives
Resilienza (Ref.
120179): Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
