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Poecilia wingei, commonly known as the Blackbar Endler or Endler's Livebearer, is a small, vibrant freshwater fish native to Venezuela. Males are particularly striking, displaying a kaleidoscope of iridescent colors and patterns, including metallic greens, oranges, blacks, and blues, often with a prominent black bar or spot on their flanks. Females are typically larger and less colorful, exhibiting a more subdued silvery-grey or olive coloration. They are livebearers, meaning they give birth to live, free-swimming fry. Endlers are known for their active nature and rapid breeding.
Körperliche Merkmale
- Körperform
- elongated
- Färbung
- Males are highly polymorphic, displaying iridescent metallic greens, oranges, yellows, blues, and blacks. A distinctive black bar or spot is often present on the flank. Females are typically silvery-grey to olive, with less prominent coloration.
- Schuppentyp
- cycloid
- Maulstellung
- superior
- Besondere Merkmale
- Small size (males up to 2.5 cm, females up to 4.5 cm), Vibrant, iridescent coloration in males, Prominent black bar or spot on male flanks, Livebearer reproduction
- Rückenflosse
- Single, relatively short dorsal fin, often with color patterns in males.
- Schwanzflosse
- Caudal fin (tail fin) can vary in shape, from rounded to spade-shaped, often with vibrant colors and patterns in males.
- Brustflosse
- Small, clear pectoral fins.
- Auffällige Flossen
- Males possess a gonopodium, a modified anal fin used for internal fertilization.
Bestimmungstipps
Size
Males are very small, typically not exceeding 2.5 cm (1 inch). Females are slightly larger, up to 4.5 cm (1.8 inches).
Male Coloration
Look for the intense, iridescent metallic colors (green, orange, black, blue) and the characteristic black bar or spot on the side of the body. This is the most reliable distinguishing feature from other small livebearers.
Female Appearance
Females are less colorful, generally silvery-grey or olive, and lack the vibrant patterns of the males. They are also typically larger and rounder, especially when gravid.
Gonopodium
Males possess a distinct, rod-like gonopodium (modified anal fin) used for reproduction, which is absent in females.
Lebensraum
- Wassertyp
- freshwater
- Tiefe
- Typically found in shallow, slow-moving waters near the surface.
- Umgebung
- Found in warm, shallow, often brackish lagoons and coastal drainages, particularly in the Laguna de Patos and Cumana regions of Venezuela. They prefer areas with dense vegetation, algae, and detritus, which provide both food and cover.
- Geografische Verbreitung
- Native to the Paria Peninsula, specifically the Laguna de Patos and Cumana regions of northeastern Venezuela.
Aquarieninformationen
- Pflegeaufwand: beginner
- Temperament: peaceful
- Ernährung: omnivore
- Mindestbeckengröße: 10 gallons
- Temperatur: 24-28°C (75-82°F)
- pH-Wert: 6.5-8.0
- Härte: 10-20 dGH
- Verträglichkeit: Excellent with other peaceful, small fish. Avoid housing with large or aggressive species that might prey on them. Good tank mates include other small livebearers, tetras, rasboras, and corydoras.
- Besondere Anforderungen: Requires a well-planted tank with plenty of hiding spots for fry and to break up lines of sight. A tight-fitting lid is recommended as they are known jumpers. Good water quality is essential, and a varied diet will enhance their coloration and health.
Informationen zum Wildbestand
- Erhaltungszustand: vulnerable
- Saisonalität: Breeds year-round in suitable conditions, with no specific seasonal breeding patterns observed in the wild due to stable tropical climate.
- Marktpreis: Low to moderate, depending on strain and coloration.
- Kommerzielle Bedeutung: medium
- Geschmack: Not typically consumed due to their small size.
- Textur: Not typically consumed due to their small size.
- Nährwert: Not typically consumed due to their small size.
Wichtige Fakten
Discoveryinteresting
Poecilia wingei was first collected by Frank Endler in 1975, though it was initially considered a variant of Poecilia reticulata (guppy). It was formally described as a distinct species in 2005 by Fred N. Poeser, Michael Kempkes, and Isaac J. H. Isbrücker.
Rapid Reproductionbehavior
Endlers are prolific breeders, with females capable of giving birth every 23-24 days under optimal conditions. They can store sperm for multiple batches of fry.
Hybridizationevolution
Poecilia wingei can readily hybridize with Poecilia reticulata (common guppy), producing fertile offspring. This has led to concerns about the genetic purity of wild and captive populations.
Conservation Statusinteresting
The wild populations of Poecilia wingei are considered 'Vulnerable' by the IUCN due to habitat degradation and potential hybridization with introduced guppies.
Sexual Dimorphismbehavior
Endlers exhibit extreme sexual dimorphism, with males being significantly smaller and much more brightly colored than females, a common trait in many livebearer species.
Sicherheitsinformationen
Sicher- Sicherheitsstufe: safe
- Giftig: Nein
- Essbarkeit: not recommended
- Hinweise zum Umgang: No specific handling precautions are required beyond general care for small, delicate fish. Avoid sudden movements or rough handling to prevent stress or injury.
Ähnliche Arten
Guppy
Poecilia reticulata
While closely related and often interbreeding, pure Poecilia wingei males are generally smaller, have more intense, blocky color patterns (often with a prominent black bar/spot), and typically lack the elaborate, flowing finnage seen in many domesticated guppy strains. Guppies also have a wider natural distribution.
Least Killifish
Heterandria formosa
The Least Killifish is also a very small livebearer, but it typically has a more subdued coloration, often with a horizontal black stripe along the body, and lacks the iridescent metallic patches and distinct black bar of the Endler. Its body shape is also generally more slender.
Wissenschaftliche Klassifikation
- Reich
- Animalia
- Stamm
- Chordata
- Klasse
- Actinopterygii
- Ordnung
- Cyprinodontiformes
- Familie
- Poeciliidae
- Gattung
- Poecilia
- Art
- Poecilia wingei
Blackbar Endler entdecken
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