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This species is distinguished by the following characters: maxillary barbel extending beyond the pectoral-fin base; teeth few in both jaws (1-2 in premaxilla; 4-6 in dentary); edge of lips with barbelets, surface of lips with papillae and with one thick barbelet behind premaxillae and other two barbelets next to each pre-maxillae; in the holotype the barbelet behind premaxillae ramifies into two conical arms with equal size, while in paratypes this thick barbelet is not ramified; differs from all its congeners by the presence of a unique pattern of the buccal ornamentation, with numerous elongated smooth papillae in irregular rows on lower lip (vs. papillae not elongated; differs from R. macromystax, R. stewarti and R. listrorhinos by having fewer premaxillary teeth, 1-2 (vs. 4-6 in macromystax, stewarti, and 5-6 in listrorhinos), and by having a triangular-shaped head in dorsal view (vs. spatula-shaped head); differs from R. rhami by maxillary barbel reaching the middle of the pectoral fin (vs. maxillary barbel not reaching the gill opening) (Ref. 128857). Cross section: flattened.
Crispim-Rodrigues, J.L., M.J. Bernt, B.T. Waltz, G.S.C. Silva, R.C. Benine, C. Oliveira, R. Covain and F.F. Rox, 2023. A new species of mailed catfish of genus Rhadinoloricaria (Siluriformes: Loricariidae: Loricariinae) from Rio Negro basin, Brazil. J. Fish Biol. Early view: [1-10]. [First published online, pp. 1-10, 11 May 2023.] (Ref. 128857)
系統發育多樣性指數 (參考文獻 82804): PD50 = 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00398 (0.00185 - 0.00857), b=3.11 (2.93 - 3.29), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
營養階層 (參考文獻 69278): 2.7 ±0.2 se; based on size and trophs of closest relatives
回復力 (參考文獻 120179): 高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
釣魚的脆弱性 (Ref. 59153): Low vulnerability (10 of 100). 🛈
