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The Goldmolly is a popular livebearing fish in the aquarium trade, primarily derived from selective breeding of Poecilia latipinna (Sailfin Molly) and Poecilia sphenops (Short-finned Molly), or hybrids thereof. These species are known for their robust nature and adaptability to various water conditions, including brackish environments. The 'Gold' coloration is a cultivated trait, not typically found in wild populations, which are usually duller in hue. They are characterized by their somewhat stout body, upward-pointing mouth, and in the case of P. latipinna, a prominent dorsal fin in males.
Körperliche Merkmale
- Körperform
- compressed
- Färbung
- Cultivated varieties are typically bright golden-yellow, often with iridescent scales. Wild types of P. latipinna and P. sphenops vary, often being silvery-grey to olive-green with iridescent flecks, sometimes with dark spots or blotches.
- Schuppentyp
- cycloid
- Maulstellung
- superior
- Besondere Merkmale
- Livebearer (gives birth to live young), Sexual dimorphism (males generally smaller, more colorful, and possess a gonopodium), Upward-pointing mouth
- Rückenflosse
- P. latipinna males have a very large, sail-like dorsal fin with 13-16 rays. P. sphenops has a shorter, more rounded dorsal fin with 8-10 rays. Goldmolly hybrids can exhibit intermediate dorsal fin sizes.
- Schwanzflosse
- Rounded to slightly emarginate caudal fin.
- Brustflosse
- Small, rounded, and transparent.
- Auffällige Flossen
- Males possess a modified anal fin called a gonopodium, used for internal fertilization.
Bestimmungstipps
Body Shape and Size
Goldmolly hybrids typically reach 5-10 cm (2-4 inches) in length. Females are generally larger and more robust than males.
Coloration
The most striking feature of the Goldmolly is its vibrant golden-yellow color, which distinguishes it from most wild-type mollies.
Dorsal Fin (Males)
Observe the dorsal fin. If it is exceptionally large and sail-like, it indicates a strong P. latipinna influence. A shorter, more rounded dorsal fin suggests P. sphenops influence or a hybrid with less P. latipinna genetics.
Gonopodium (Males)
Males can be identified by their modified, rod-like anal fin (gonopodium), which is absent in females.
Lebensraum
- Wassertyp
- freshwater
- Tiefe
- Shallow waters, typically less than 1 meter.
- Umgebung
- Naturally found in coastal fresh and brackish waters, including swamps, marshes, estuaries, and slow-moving rivers. They prefer areas with dense vegetation for cover and feeding.
- Geografische Verbreitung
- Native to the southeastern United States (P. latipinna, from North Carolina to Veracruz, Mexico) and Central America (P. sphenops, from Mexico to Colombia). Widely introduced globally due to the aquarium trade.
Aquarieninformationen
- Pflegeaufwand: beginner
- Temperament: peaceful
- Ernährung: omnivore
- Mindestbeckengröße: 30 gallons (for a small group)
- Temperatur: 22-28°C (72-82°F)
- pH-Wert: 7.0-8.5
- Härte: 10-25 dGH
- Verträglichkeit: Generally compatible with other peaceful, similarly sized community fish. Avoid fin-nippers or overly aggressive species.
- Besondere Anforderungen: Mollies prefer well-planted tanks with open swimming areas. They benefit from the addition of aquarium salt (1-2 teaspoons per gallon) in freshwater setups, especially if derived from brackish ancestors, as it can improve their health and coloration. Regular water changes are crucial for their well-being.
Informationen zum Wildbestand
- Erhaltungszustand: least concern
- Saisonalität: Breeds year-round in suitable conditions.
- Marktpreis: Low to moderate, depending on specific strain and size.
- Kommerzielle Bedeutung: high
- Geschmack: Not typically consumed.
- Textur: Not typically consumed.
- Nährwert: Not typically consumed.
Wichtige Fakten
Livebearersbehavior
Mollies are livebearing fish, meaning they give birth to fully formed, free-swimming fry rather than laying eggs. This reproductive strategy is a key characteristic of the Poeciliidae family.
Brackish Water Toleranceinteresting
Many molly species, particularly Poecilia latipinna, are naturally found in brackish water environments and thrive when a small amount of aquarium salt is added to their freshwater tanks.
Algae Eatersbehavior
Mollies are excellent algae eaters, helping to keep aquarium glass and decorations clean. Their diet in the wild includes significant amounts of plant matter and detritus.
Sexual Dimorphismbehavior
Males are typically smaller, more colorful, and possess a distinct gonopodium (modified anal fin) for reproduction, making them easily distinguishable from females.
Hybrid Originevolution
The 'Goldmolly' is not a distinct wild species but rather a cultivated color morph, often resulting from selective breeding or hybridization between different Poecilia species like P. latipinna and P. sphenops.
Sicherheitsinformationen
Sicher- Sicherheitsstufe: safe
- Giftig: Nein
- Essbarkeit: not recommended
- Hinweise zum Umgang: No specific handling precautions are required beyond standard fish handling practices to minimize stress. Avoid prolonged exposure to air.
Ähnliche Arten
Sailfin Molly
Poecilia latipinna
Wild-type P. latipinna are typically silvery-grey to olive with rows of dark spots on the body and fins. Males have a very large, sail-like dorsal fin. Goldmolly is a color morph, often a hybrid, with a distinct golden coloration.
Short-finned Molly
Poecilia sphenops
Wild-type P. sphenops are generally smaller and duller in coloration (grey to olive) than P. latipinna, with a shorter, more rounded dorsal fin in males. Goldmolly is a color morph, often a hybrid, with a distinct golden coloration and potentially larger dorsal fin if P. latipinna genetics are present.
Guppy
Poecilia reticulata
Guppies are generally smaller, more slender, and exhibit a wider array of vibrant colors and tail shapes. Their caudal fin is typically more elaborate than that of mollies, and their body shape is less robust.
Wissenschaftliche Klassifikation
- Reich
- Animalia
- Stamm
- Chordata
- Klasse
- Actinopterygii
- Ordnung
- Cyprinodontiformes
- Familie
- Poeciliidae
- Gattung
- Poecilia
- Art
- P. latipinna/P. sphenops (hybrid or selectively bred forms)
Goldmolly entdecken
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