Classification / 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 / Mức độ sâu / distribution range
Sinh thái học
; Nước ngọt Tầng nổi. Tropical
South America: Brazil.
Bộ gần gũi / Khối lượng (Trọng lượng) / Age
Chín muồi sinh dục: Lm ? range ? - ? cm
Max length : 2.9 cm SL con đực/không giới tính; (Ref. 78710); 3.0 cm SL (female)
Short description
Khóa để định loại | Hình thái học | Sinh trắc học
Các vây lưng mềm (tổng cộng) : 17 - 26; Tia mềm vây hậu môn: 21 - 26; Động vật có xương sống: 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).
Body shape (shape guide): short and / or deep; Cross section: compressed.
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
Chín muồi sinh dục | Sự tái sinh sản | Đẻ trứng | Các trứng | Sự sinh sản | Ấu trùng
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)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
Các công cụ
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Estimates based on models
Phylogenetic diversity index (Tài liệu tham khảo
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).
Mức dinh dưỡng (Tài liệu tham khảo
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Thích nghi nhanh (Tài liệu tham khảo
120179): Chiêù cao, thời gian nhân đôi của chủng quần tối thiểu là dưới 15 tháng (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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