Classification / Names
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Siluriformes (Catfishes) >
Loricariidae (Armored catfishes) > Loricariinae
Etymology: tuna: The specific name 'tuna' is from the Amerindian Trio-Wayana meaning river, water. It refers to Harttia fluminensis, which has a name with the same meaning, because of their extreme morphological resemblance. A name used in apposition..
Environment: milieu / climate zone / depth range / distribution range
Ecologia
; acqua dolce demersale. Tropical
South America: Upper Paru de Oeste River.
Size / Peso / Age
Maturity: Lm ? range ? - ? cm
Max length : 17.2 cm SL maschio/sesso non determinato; (Ref. 90209)
Short description
Chiavi di identificazione | Morfologia | Morfometria
Raggi dorsali molli (totale) : 7; Spine anali: 1; Raggi anali molli: 5. Distinguished from all other species of Harttia except Harttia fluminensis and Harttia trombetensis by having an incomplete abdominal cover restricted to preanal and abdominal lateral plates with a row of platelets joining these two series of plates (vs. absence of row of platelets making junction between preanal and lateral abdominal plates), and by its specific barcode sequence (JF292262). Differs from Harttia fluminensis by having a shallower head (31.96-38.77, mean 36.52 ± 1.80% of HL, vs. 37.31-43.30, mean 38.94 ± 1.42% of HL); and from Harttia trombetensis by the color pattern of the caudal fin (a dark rounded blotch at base of caudal fin, vs. a large dark band). Four morphometric
variables strictly characterize Harttia tuna: longer head (mean = 24.97 ± 1.14%
of SL vs 23.19 ± 1.33 < mean < 24.15 ± 1.38% of SL); greater predorsal length (mean = 33.58 ± 0.84% of SL vs. 32.10 ± 1.05 < mean < 33. 01 ± 1.11% of SL); smaller postdorsal length (mean = 55.44 ± 1.10% of SL vs 56.63 ± 0.94 < mean < 57.35 ± 1.26% of SL); and smaller orbital diameter (mean = 20.97 ± 1.12% of HL vs. 22.68 ± 1.43 < mean < 23.37 ± 1.08% of HL) (Ref. 90209).
Life cycle and mating behavior
Maturities | Riproduzione | Spawnings | Egg(s) | Fecundities | Larve
Covain, R., S. Fisch-Muller, J.I. Montoya-Burgos, J.H. Mol, P.-Y. Le Bail and S. Day, 2012. The Harttiini (Siluriformes, Loricariidae) from the Guianas: a multi-table approach to assess their diversity, evolution, and distribution. Cybium 36(1):115-161. (Ref. 90209)
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 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00347 (0.00159 - 0.00757), b=3.14 (2.96 - 3.32), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 2.5 ±0.2 se; based on size and trophs of closest relatives
Resilienza (Ref.
120179): Medio, tempo minimo di raddoppiamento della popolazione 1.4 - 4.4 anni (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (11 of 100).
