Classificação / Names
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Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Rivulidae (Rivulines) > Cynolebiinae
Etymology: longignatus: Name from Latin 'longi' meaning distant and 'gnatus' meaning born, referring to the long distance between the type locality of this new species and the area occupoed by the other species of the S. flammeus group in the Tocantins River basin.
More on author: Costa.
Environment: milieu / climate zone / depth range / distribution range
Ecologia
; Água doce pelágico(a,os,as). Tropical
South America: Brazil.
Tamanho / Peso / Idade
Maturity: Lm ? range ? - ? cm
Max length : 2.9 cm SL macho/indeterminado; (Ref. 78710); 3.0 cm SL (female)
Descrição breve
Chaves de identificação | Morfologia | Morfometria
Raios dorsais moles (total) : 17 - 26; Raios anais moles: 21 - 26; Vértebras: 27 - 29. Distinguished by the following set of characters: females with slightly longer anal fin, almost spatula-shaped; males with bright blue anal fin and distinct concave dorsal profile of head; males' anterior part of dorsal fin with black spots and its caudal fin with transverse series of small blue spots; females' dorsal-fin origin in a vertical through the base of the 5th anal-fin ray; long filamentous rays on dorsal fin in males absent and D 23-26 (17-18 in females); males' anal fin slightly pointed, without filaments, and A 23-26 (21-23 in females); neuromasts in the supraorbital 12-14, infraorbital 2+18-20, preopercular 13-15, and mandibular series 10-11) (Ref. 78710).
The collection site is a broad seasonal swamp close to the Pacoti River, a small, isolated coastal basin of NE Brazil with shallow part of the swamp 0.4-0.8 m deep. It has dense aquatic vegetation and slightly turbid water. Gut contents include amoebas and small aquatic arthropods, with larvae of Odonata and Chironomidae, a small Ostracoda and Cladocera specimens (Ref. 78710).
Life cycle and mating behavior
Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas
Costa, W.J.E.M., 2008. Simpsonichthys longignathus, a new seasonal killifish of the S. flammeus group from the Pacoti River basin, northeastern Brazil (Cyprinodontiformes: Rivulidae). Ichthyol. Explor. Freshwat. 19(2):155-159. (Ref. 78710)
Categoria na Lista Vermelha da IUCN (Ref. 130435: Version 2024-2)
Ameaça para o homem
Harmless
Utilização humana
Ferramentas
Relatórios especiais
Descarregue XML
Fontes da internet
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01995 (0.00906 - 0.04395), b=3.01 (2.83 - 3.19), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Nível Trófico (Ref.
69278): 3.1 ±0.4 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).
