SCOTCAT.COM  

Canto et al. (3)

Abstract: A new species of Ammoglanis is described from the Rio Aruri Grande, Rio Jamanxim drainage, a right bank tributary to the middle rio Tapajós, Pará State, Brazil. The new species is identified and defined through morphological characters such as colour pattern, consisting of eight or nine transverse dark bars regularly spaced along the dorsum; skeletal morphology; numbers of premaxillary teeth, vertebrae, and dorsal- and pectoral-fin rays; presence of cranial fontanel and two small, finger-like papillae on chin anterior to the gular apex. The new species probably is an additional example of endemism in the Rio Tapajós basin. Habitat: Ammoglanis nheengatu is known from the Rio Jamamxim, a tributary situated on the limit between the middle and lower Rio Tapajós, and probably is an additional example of endemism in the Rio Tapajós basin (e.g., Dagosta, de Pinna, 2017; Jézéquel et al., 2020). Ammoglanis nheengatu is the third species of the genus reported within the limits of the Rio Amazonas basin, where the greatest diversity of the genus is housed (MCC de Pinna, 2010, pers. comm.) Therefore, it is necessary to increase efforts, especially in the Amazon basin, to establish the actual diversity of this genus of trichomycterid catfish (Canto et al. 2022). Etymology: The specific epithet, nheengatu, honours the indigenous people of the Amazon. Nheengatu is known as the general language of the Amazon that helped create the cultural identity of the largest Brazilian region. In the nineteenth century Nheengatu was the most commonly spoken language in the Amazon region, in both small and large cities (e.g., Belém, Manaus, Macapá, Santarém, Tefé, and Óbidos). Currently, Nheengatu is being rescued in indigenous schools of the lower rio Tapajós basin. A noun in apposition.

None

None

Trichomycteridae

South America: Rio Jamanxim drainage, a right bank tributary to the middle Rio Tapajós, Pará State, Brazil.

1.6cm. (½ins)

25-28°c (77-83°f.)

6.0-7.0.

Canto ALC, Hercos AP, Ribeiro FRV. Description of a new species of miniature catfish of the genus Ammoglanis (Siluriformes: Trichomycteridae) from rio Tapajós basin, Brazil. Neotrop Ichthyol. 2022; 20(2):e210122