Rediscovering species: redescription of Bryconops gracilis (Characiformes: Iguanodectidae), an often-misidentified species

Autor(es)

Silva-Oliveira, Carlison ^{[1, 2]} ; Ota, Rafaela P. ^[2] ; Lima, Flavio C. T. ^[3] ; Py-Daniel, Lucia Rapp ^[4]

Afiliação do(s) autor(es)

^[1] Inst Desenvolvimento Sustentavel Mamiraua, Lab Ecol & Biol Peixes, Estr Bexiga 2584, Tefe, AM - Brazil

^[2] Inst Nacl de Pesquisas da Amazonia, Programa Posgrad Biol Ague Doce & Pesca Interior, Av Andre Araujo 2936, Caixa Postal 2223, BR-69060001 Manaus, Amazonas - Brazil

^[3] Univ Estadual Campinas Adao Jose Cardoso, Museu Zool, Caixa Postal 6109, BR-13083863 Campinas, SP - Brazil

^[4] Inst Nacl de Pesquisas da Amazonia, Colecao Peixes, Av Andre Araujo 2936, Caixa Postal 2223, BR-69060001 Manaus, Amazonas - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Neotropical Ichthyology; v. 19, n. 4 2021.
• Citações Web of Science: 1

Resumo

ABSTRACT A redescription of Bryconops gracilis is provided, a species poorly known for more than a century. Bryconops gracilis differs from all congeners by having the following combination of features: eight branched pelvic-fin rays, 31-36 anal-fin rays, 15-17 predorsal scales arranged in a regular series, two rows of premaxillary teeth, and 53-60 lateral-line scales. The species was often misidentified as B. alburnoides by sharing an overall elongated body shape, caudal fin yellowish in life, and a high number of lateral-line scales. A diagnosis between B. alburnoides and B. gracilis is provided. The holotype of B. gracilis which for many years had whereabouts unknown, was recovered, examined and illustrated by CT-Scan. Additionally, more detailed information about the type locality, morphology, color pattern (including in living specimens), habitat and distribution pattern of species are provided. (AU)

• Processo FAPESP: 13/20936-0 - Sistemática das piabas (gêneros Hemigrammus, Hyphessobrycon, Thayeria, Parapristella e Bryconella), com ênfase nas espécies do norte da América do Sul cis-andina
• Beneficiário: Flávio César Thadeo de Lima
• Modalidade de apoio: Bolsas no Brasil - Jovens Pesquisadores
• Processo FAPESP: 11/51532-7 - Sistemática das piabas (gênero Hemigrammus, Hyphessobrycon, Parapristella e Bryconella), com ênfase nas espécies do norte da América do Sul cisandina
• Beneficiário: Flávio César Thadeo de Lima
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores