A new species of Inpaichthys from the rio Canamã, rio Aripuanã basin, Mato Grosso State, Brazil, with a redefinition of the genus (Characidae: Stethaprioninae) Author Ferreira, Katiane M. Instituto de Biociências, Departamento de Biologia e Zoologia, Universidade Federal de Mato Grosso, Av. Fernando Corrêa, 2367, Boa Esperança, 78060 - 900 Cuiabá, MT, Brazil. (KMF) kmferreira @ gmail. com, (ACR) alexandrecunharibeiro @ gmail. com, (HPS) painsbio @ gmail. com, (DCF) ferreiradc @ gmail. com. kmferreira@gmail.com Author Ribeiro, Alexandre C. Instituto de Biociências, Departamento de Biologia e Zoologia, Universidade Federal de Mato Grosso, Av. Fernando Corrêa, 2367, Boa Esperança, 78060 - 900 Cuiabá, MT, Brazil. (KMF) kmferreira @ gmail. com, (ACR) alexandrecunharibeiro @ gmail. com, (HPS) painsbio @ gmail. com, (DCF) ferreiradc @ gmail. com. kmferreira@gmail.com Author Lima, Flávio C. T. Museu de Diversidade Biológica, Instituto de Biologia, Universidade Estadual de Campinas, Caixa Postal 6109, 13083 - 863 Campinas, SP, Brazil. (FCTL) fctlima @ gmail. com. fctlima@gmail.com Author Silva, Hugmar P. da Author Ferreira, Daniela C. Instituto de Biociências, Departamento de Biologia e Zoologia, Universidade Federal de Mato Grosso, Av. Fernando Corrêa, 2367, Boa Esperança, 78060 - 900 Cuiabá, MT, Brazil. (KMF) kmferreira @ gmail. com, (ACR) alexandrecunharibeiro @ gmail. com, (HPS) painsbio @ gmail. com, (DCF) ferreiradc @ gmail. com. kmferreira@gmail.com Author Mirande, Juan Marcos Fundación Miguel Lillo, Unidad Ejecutora Lillo (CONICET-FML), Miguel Lillo 251, San Miguel de Tucumán, 4000, Argentina. (JMM) jmmirande @ lillo. org. ar (corresponding author). jmmirande@lillo.org.ar text Neotropical Ichthyology 2024 e 230113 2024-02-19 22 1 1 20 http://dx.doi.org/10.1590/1982-0224-2023-0113 journal article 295860 10.1590/1982-0224-2023-0113 6cc35265-f557-4c8f-a42b-0ce285604cb7 1982-0224 11164452 94422A47-3AAF-47D1-9832-17A364AFE9CB

TABLE 1 | Morphometric data of Inpaichthys parauapiranga (N = 20) and I. kerri (N = 10; CPUFMT 4869; CPUFMT 4988; CPUFMT 5066). Range of I. parauapiranga includes the holotype. SD = standard deviation.

	Inpaichthys parauapiranga				Inpaichthys kerri
	Holotype		Paratypes
		Range	Mean	SD	Range	Mean	SD
Standard length	25.4	17.2–25.4	21.5	–	19.7–26.6	22.4	–
Percentages of standard length
Body depth	32.5	32.1–36.4	34.7	1.1	30.6–36.3	32.7	1.8
Snout to dorsal-fin origin	54.7	53.1–57.6	55.1	1.1	51.6–55.9	54.1	1.3
Snout to pectoral-fin origin	25.5	25.5–28.3	26.7	0.9	24.9–27.3	25.7	1.1
Snout to pelvic-fin origin	43.6	43.6–47.6	46.0	1.1	42.9–47.1	44.6	1.4
Snout to anal-fin origin	56.9	53.3–57.6	56.1	1.3	56.2–60.5	59.1	1.2
Pelvic-fin insertion to anal-fin origin	13.9	11.8–15.3	13.7	1.0	11.3–15.8	13.6	1.3
Caudal-peduncle depth	13.9	11.6–14.0	12.6	0.7	10.0–11.7	11.2	0.5
Caudal-peduncle length	9.3	9.3–11.4	10.4	0.8	8.9–12.9	11.8	1.3
Dorsal-fin origin to caudal-fin base	51.4	46.8–51.5	49.3	1.2	46.4–49.4	48.3	1.0
Dorsal-fin base length	12.5	10.9-13.7	12.5	0.6	10.7–13.2	12.0	0.7
Anal-fin base length	34.9	31.3–37.1	34.3	1.4	29.4–32.7	31.3	1.2
Pectoral-fin length	20.6	18.2–23.9	21.3	1.6	18.3–22.6	20.2	1.3
Pelvic-fin length	14.3	12.6–15.9	14.7	0.9	14.0–16.8	15.1	0.8
Dorsal-fin length	29.6	26.4–34.6	29.9	1.8	26.1–30.6	28.5	1.8
Anal-fin length	18.5	17.1–23.9	20.5	1.8	17.4–21.3	19.1	1.4
Bony head length	25.7	25.6–29.5	27.5	1.3	24.3–28.0	25.8	1.1
Head depth	24.8	23.5–28.1	26.1	1.3	23.1–25.8	24.3	1.1
Percentages of head length
Horizontal eye diameter	37.9	37.0–40.4	38.9	1.0	38.7–41.9	40,4	1.2
Snout length	20.9	19.7–24.5	22.2	1.3	20.1–23.6	21.9	1.2
Least interorbital distance	38.7	33.3–38.7	35.4	1.5	35.2–39.9	37.1	1.4
Upper jaw length	41.3	39.5–43.5	41.5	1.1	38.6–41.8	40.1	1.0