Classificação / Names
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Characiformes (Characins) >
Characidae (Characins; tetras) > Cheirodontinae
Etymology: Serrapinnus: Latin, serran, serranus, saw and a fish of genus Serranus + Latin, pinna = spiny, thorn (Ref. 45335); potiguar: The name refers to 'potiguar', a term traditionally used in Brazil to refer to someone born in the Rio Grande do Norte State. An adjective.
Environment: milieu / climate zone / depth range / distribution range
Ecologia
; Água doce bentopelágico. Tropical
South America: Rio Ceará-Mirim basin, Rio Grande do Norte State, Brazil.
Tamanho / Peso / Idade
Maturity: Lm ? range ? - ? cm
Max length : 3.2 cm SL macho/indeterminado; (Ref. 96867)
Descrição breve
Chaves de identificação | Morfologia | Morfometria
Raios dorsais moles (total) : 11. Serrapinnus potiguar can be diagnosed from all congeners by the shape and arrangement of the ventral procurrent caudal-fin rays of mature males, where the hypertrophied elements are scimitar-shaped and arranged in a semi-circle through the ventral profile of the caudal peduncle (vs. hypertrophied elements rod-shaped or pointed distally, arranged parallel to each other). It differs further by having 5 cusps in the premaxillary and dentary teeth (vs. 7 to 9 in S. calliurus, S. micropterus, and S. piaba, 9 to 11 in S. sterbai, and 10 to 12 in S. gracilis and S. littoris), terminal mouth (vs. slightly superior mouth in S. microdon), an incomplete lateral line (vs. complete lateral line in S. heterodon), dorsal fin mostly hyaline (vs. dorsal fin with an anterior and proximal dark blotch in S. notomelas), and by lacking black spot in the posteroventral region of the abdomen (vs. present in S. kriegi) (Ref. 96867).
The type locality, the rio Ceará-Mirim, is characterized by clear and transparent water, sandy
bottom high depth 1.2 m, slow to moderate water current and dense floating and submerse vegetation. Sympatric and synotopic with Compsura heterura, Serrapinnus heterodon and S. piaba in the type locality. Feeds mainly on vegetal matter and algae, but also takes insects and microcrustaceans (Ref. 96867).
Life cycle and mating behavior
Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas
Jerep, F.C. and L.R. Malabarba, 2014. A new species of Serrapinnus Malabarba, 1998 (Characidae: Cheirodontinae) from Rio Grande do Norte State, northeastern Brazil. Neotrop. Ichthyol. 12(2):301-308. (Ref. 96867)
Categoria na Lista Vermelha da IUCN (Ref. 130435: Version 2024-2)
Ameaça para o homem
Harmless
Utilização humana
Pescarias: sem interesse
Ferramentas
Relatórios especiais
Descarregue XML
Fontes da internet
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00461 - 0.02730), b=3.08 (2.89 - 3.27), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Nível Trófico (Ref.
69278): 2.6 ±0.5 se; based on size and trophs of closest relatives
Resiliência (Ref.
120179): Elevada, tempo mínimo de duplicação da população menor que 15 meses (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
