TY - JOUR T1 - A remarkable new Characidium (Characiformes: Crenuchidae) from tributaries of río Marañón, Loreto, Peru, with unique fin bony processes in both sexes JO - Neotropical Ichthyology A1 - Zanata, Angela Maria A1 - Britzke, Ricardo A1 - Meza-Vargas, Vanessa A1 - Hidalgo, Max H. A1 - Faustino-Fuster, Dario A1 - Oliveira-Silva, Leonardo SN - 1679-6225 UL - 10.1590/1982-0224-2025-0047 VL - 23 Y1 - 2025 PB - Brasil ER -