6.1 cm SL (male/unsexed; (Ref. 83383))
Jupiaba citrina is distinguished from itscongeners (except J. abramoides (Eigenmann), J. anteroides, and J. poranga Zanata) by its color pattern, consisting of two vertically-elongated humeral blotches, the anterior usually with a darker median portion forming an horizontally elongatedtrace pointed anteriorly, and a well defined darklongitudinal line extending from the second humeral blotch to the caudal peduncle. The new species differs from J. abramoides, J. anteroides, and J. poranga by having anhorizontally-elongated blotch on caudal peduncle that extends continuously to the distal tip of the caudal-fin median rays (vs. dark line not forming blotch on caudal peduncle and posterior end of this line isolated from dark blotch over caudalfin rays by a clear area). Jupiaba citrina differs from various congeners (except J. abramoides, J. anteroides, J. apenima, J. asymmetrica (Eigenmann), J. poranga, and J. yarina Zanata), by having the predorsal median area without a seriesof scales (vs. predorsal median area with a series of organized scales). Jupiaba citrina differs further from J. poranga andalso J. yarina by its lower number of perforated scales (47-51 vs. 56-66) and lower number of scales between dorsal-fin originand lateral line [10-11 (one specimen with 12) vs. 12-15] and between lateral line and origin of pelvic fin (8-9 vs. 10-13). From J. apenima it differs also by having lower number of perforated scales (47-51 vs. 55-59). The new species can be additionally distinguished from part of its congeners (J. acanthogaster, J. atypindi Zanata, J. keithi (Géry et al.), J.maroniensis (Géry et al.), J. meunieri (Géry et al.), J. kuruaBirindelli et al., J. minor (Travassos), J. pinnata (Eigenmann), and J. poekotero Zanata & Lima) by having teeth with a distinctly larger median cusp and dentary teeth decreasing abruptly in size posteriorly (vs. median teeth cusp similar in size to the remaining cusps and dentary teeth decreasinggradually in size towards posterior portion). From the remaining species, J. citrina differs further from J. iasy (Netto-Ferreira et al.), J. mucronata (Eigenmann), J. ocellata (Géryet al.), J. paranatinga (Netto-Ferreira et al.), J. pirana Zanata, J. polylepis, J. potaroensis (Eigenmann), and J. zonata by having higher number of perforated scales (47-51 vs. 33-45), and from J. elassonaktis Pereira & Lucinda, J. essequibensis (Eigenmann), and J. scologaster (Weitzman & Vari) by havinghigher number of branched anal-fin rays (24-27 vs. 17-23 (Ref. 83383).