Ps-Graduao em Sade nica, Universidade Santo Amaro, So Paulo, SP. .
Instituto de Biocincias, Universidade Estadual Paulista Julio de Mesquita Filho (UNESP), Botucatu, Brazil.
Zootaxa. 2022 Aug 16;5175(2):285-292. doi: 10.11646/zootaxa.5175.2.6.
Although the genus Rineloricaria is widely distributed in the Neotropical region, its species usually occupy single drainages with high habitat fidelity. Rineloricaria species show evident sexual dimorphism with hypertrophied odontodes in sexually mature males. Here, we describe a new species of Rineloricaria present in the Rio Paraiba do Sul basin and coastal rivers in Rio de Janeiro State. The new species has extreme sexual dimorphism making possible to differentiate it from all congeners. The new species can also be separated from other sympatric species by morphometric characteristics and dermal plates pattern.
尽管 Rineloricaria 属广泛分布于新热带地区，但它们的物种通常只栖息在具有高度栖息地忠诚度的单一水系中。Rineloricaria 物种表现出明显的性二态性，性成熟雄性的齿突会过度生长。在这里，我们描述了一种新的 Rineloricaria 物种，它存在于里约热内卢州的 Rio Paraiba do Sul 流域和沿海河流中。该新种具有极端的性二态性，使其与所有近缘种都能区分开来。该新种还可以通过形态特征和皮肤板模式与其他同域物种区分开来。
