Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Siluriformes
(Catfish) > Loricariidae
(Armored catfishes) > Loricariinae
Etymology: longicauda: Derived from the Latin longus, meaning long, and cauda, meaning tail. This makes reference to the shape of the caudal peduncle.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal. Tropical
South America: mountainous areas in the Trinité and Balenfois massifs in northern French Guiana.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 5.2 cm SL male/unsexed; (Ref. 90209)
Morphology | Morphometrics
soft rays: 5. Distinguished from all other congeneric species except Harttiella pilosa by the frequent presence of few small preanal plates (vs absence of preanal plates), and by its specific barcode sequences (JF292277, JF292278, JF292279, JF292280, JF292282, JF292283). Differs from Harttiella pilosa by having the pectoral girdle wider than pelvic girdle (vs pectoral girdle approximately as wide as the pelvic girdle). Six unique morphometric variables distinguish Harttiella longicauda from all other congeners: shorter pelvic
spines (mean = 19.36 ± 1.17% of SL vs 20.55 ± 0.36 < mean < 24.67 ± 1.46% of SL); smaller
body width at eighth postdorsal plate (mean = 9.29 ± 1.07% of SL vs 10.28 ± .98 < mean < 11.48 ± 0.94% of SL); body width at fourteenth postdorsal plate (mean = 3.99 ± 0.51% of SL vs 4.72 ± 0.62 < mean < 5. 59 ± 0.70% of SL); minimum caudal peduncle depth (mean = 2.53 ± 0.18% of SL vs 3.24 ± 0.2 1 < mean < 4.86 ± 0.43% of SL); interorbital width (mean = 33.82 ± 2.03% of HL vs 35.25 ± 1.21 < mean < 38.20 ± 2.03% of HL), and head depth at internostril (mean = 33.19 ± 1.76% of HL vs 33.89 ± 2.22 < mean < 36.74 ± 4.00% of HL (Ref. 90209).
Found in mountain areas. Sympatric with Guyanancistrus aff. brevispinis, Krobia itanyi, Rhamdia quelen, Ancistrus cf. leucostictus, Lithoxus planquettei, Characidium fasciadorsale, Melanocharacidium cf. dispilomma, and Rineloricaria aff. stewarti in the Trinité Mountains (Ref. 90209).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
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. 120744)
CITES (Ref. 118484)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00339 (0.00152 - 0.00753), b=3.17 (2.98 - 3.36), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 2.7 ±0.2 se; Based on size and trophs of closest relatives
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months ().
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .