Klassifizierung / Names
Namen | Synonyme | Catalog of Fishes(Gattung, Arten) | ITIS | CoL | WoRMS | Cloffa
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Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Rivulidae (Rivulines) > Rivulinae
Etymology: xiphidius: The name xiphidus meaning sword in Latin was given because of the characteristic longitudinal black band which decorates the sides, the snout up to the caudal peduncle in the female and the caudal fin in the male (Ref. 27188).
Environment: milieu / climate zone / depth range / distribution range
Ökologie
; süßwasser benthopelagisch; pH range: 6.0 - 6.5; dH range: 6 - ?; standorttreu. Tropical; 22°C - 25°C (Ref. 2060)
South America: Oyapock River basin and adjacent coastal drainages.
Size / Gewicht / Alter
Maturity: Lm ? range ? - ? cm
Max length : 4.5 cm TL Männchen/unbestimmt; (Ref. 35237); 3.0 cm TL (female); common length : 4.0 cm TL Männchen/unbestimmt; (Ref. 27139); max. veröff. Alter: 3.00 Jahre (Ref. 35237)
Especially found in very shallow parts of small brooks where water is brown and rich in tannin and the substrate consists of decaying vegetation (Ref. 35237). Stays in the shaded areas of small, slow flowing rivers, sympatric with R. geayi, R. agilae, R. lungi, and R. cladophorus. Sexual differentiation is possible at 4 months of age (Ref. 27188). Not a seasonal killifish (Ref. 27139). Reproduction is not so prolific; is considered difficult to maintain in the aquarium. Sexual differentiation is possible at 3 months but reproduction occurs for the first time at around one year (Ref. 35237). If pursued by a predator this species may jump on land where it rests for a few seconds before re-entering the water (Ref. 35237).
Life cycle and mating behavior
Maturities | Fortpflanzung | Spawnings | Egg(s) | Fecundities | Larven
Eggs measure 1.6 mm diameter. Sexes can be distinguished at about 3 months of age. Dominant males are followed by 1-3 females.
Costa, W.J.E.M., 2003. Rivulidae (South American Annual Fishes). p. 526-548. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 36579)
IUCN Rote Liste Status (Ref. 130435)
Bedrohung für Menschen
Harmless
Nutzung durch Menschen
Fischereien: nicht kommerziell
Tools
Zusatzinformationen
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Internet Quellen
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=0.00661 (0.00311 - 0.01404), b=3.09 (2.91 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.2 ±0.40 se; based on food items.
Widerstandsfähigkeit (Ref.
120179): hoch, Verdopplung der Population dauert weniger als 15 Monate. (tm=1; tmax=3).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
