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Puntius nigrofasciatus, commonly known as the Black Ruby Barb, is a small, active, and schooling freshwater fish belonging to the family Cyprinidae. It is highly valued in the aquarium trade for its striking coloration, particularly in mature males during breeding periods. The species exhibits sexual dimorphism, with males developing intense ruby-red to purplish-black coloration, especially on the head and anterior body, while females retain a more subdued, yellowish-brown hue.
Caratteristiche fisiche
- Forma del corpo
- compressed
- Colorazione
- Males: During breeding, head and anterior body become deep ruby-red to purplish-black, with the rest of the body dark grey to black, often with iridescent green or blue sheen. Three prominent vertical black bands are present, though they may be obscured by the dark breeding coloration. Females: Generally yellowish-brown to golden, with three distinct vertical black bands. Fins are typically reddish or yellowish, becoming more intense in males.
- Tipo di squame
- cycloid
- Posizione della bocca
- terminal
- Caratteristiche distintive
- Three prominent vertical black bands on the body (more visible in females and non-breeding males), Intense ruby-red to purplish-black coloration in breeding males, Absence of barbels
- Pinna dorsale
- Single, typically reddish with a black blotch at the base in males.
- Pinna caudale
- Forked, often reddish or yellowish, becoming darker in breeding males.
- Pinna pettorale
- Clear to reddish.
- Pinne distintive
- All fins are relatively short and rounded, proportionate to the body size.
Consigli per l'identificazione
Coloration (Males)
Look for the striking ruby-red to purplish-black head and anterior body, especially during breeding. This is a key differentiator from other barb species.
Coloration (Females/Juveniles)
Observe the yellowish-brown body with three distinct vertical black bands. These bands are usually more pronounced than in breeding males.
Absence of Barbels
Unlike many other barb species, Puntius nigrofasciatus lacks barbels, which can help distinguish it from similar-looking species.
Body Shape
Its relatively deep, compressed body shape is characteristic of the species.
Habitat
- Tipo di acqua
- freshwater
- Profondità
- Typically found in shallow, slow-moving waters.
- Ambiente
- Native to clear, shaded, and slow-flowing streams and rivers with sandy or gravelly substrates, often heavily vegetated. They prefer areas with leaf litter and submerged roots.
- Areale geografico
- Endemic to Sri Lanka, specifically found in the Kelani and Kalu river basins, and their tributaries, in the southwestern part of the island.
Informazioni sull'acquario
- Livello di cura: beginner
- Temperamento: peaceful
- Dieta: omnivore
- Dimensione minima della vasca: 75 liters (20 gallons)
- Temperatura: 22-27 °C (72-81 °F)
- Livello di pH: 6.0-7.0
- Durezza: 5-12 dGH
- Compatibilità: Excellent for community aquariums with other peaceful, similarly sized fish. Avoid keeping with very slow-moving or long-finned species as they may nip fins.
- Requisiti speciali: Requires a well-planted aquarium with open swimming spaces. Benefits from a dark substrate and subdued lighting to enhance coloration. Best kept in schools of 6 or more individuals to reduce stress and encourage natural behavior.
Informazioni in natura
- Stato di conservazione: vulnerable
- Stagionalità: Breeding activity in the wild is often linked to seasonal rainfall patterns, typically during the monsoon season when water levels rise and food availability increases.
- Prezzo di mercato: Low to moderate for aquarium trade specimens.
- Importanza commerciale: medium
- Sapore: Not typically consumed due to small size.
- Consistenza: Not typically consumed due to small size.
- Valore nutrizionale: Not typically consumed due to small size.
Fatti chiave
Vulnerable Statusinteresting
The Black Ruby Barb is listed as 'Vulnerable' by the IUCN Red List due to habitat loss and degradation in its native Sri Lankan rivers.
Color Changebehavior
Male Black Ruby Barbs undergo a dramatic color transformation during breeding, shifting from a duller hue to an intense ruby-red and purplish-black, making them one of the most visually striking barb species.
Schooling Behaviorbehavior
These fish are highly social and thrive in groups. Keeping them in schools of six or more individuals not only reduces stress but also encourages their natural schooling behaviors and enhances their coloration.
Aquarium Popularityinteresting
Despite its vulnerable status in the wild, the Black Ruby Barb is a very popular and widely available aquarium fish, with most specimens in the trade being captive-bred.
Informazioni di sicurezza
Sicuro- Livello di sicurezza: safe
- Velenoso: No
- Commestibilità: not recommended
- Note sul maneggio: No specific handling precautions are required beyond standard fish handling practices to minimize stress. They are not venomous and do not possess sharp spines that pose a significant threat.
Specie simili
Cherry Barb
Puntius titteya
Cherry Barbs are typically more slender and elongated, with a prominent horizontal red stripe (in males) rather than vertical bands. Males are bright cherry-red, lacking the purplish-black tones of the Black Ruby Barb.
Rosy Barb
Pethia conchonius
Rosy Barbs are generally larger and have a more robust body. Males exhibit a rosy-red coloration, but lack the distinct vertical bands and the intense purplish-black head of the Black Ruby Barb. They also possess small barbels.
Ticto Barb
Pethia ticto
Ticto Barbs are smaller and typically have two distinct black spots on their flanks, rather than three vertical bands. Their base coloration is silvery to golden, without the deep ruby or purplish hues.
Classificazione scientifica
- Regno
- Animalia
- Phylum
- Chordata
- Classe
- Actinopterygii
- Ordine
- Cypriniformes
- Famiglia
- Cyprinidae
- Genere
- Puntius
- Specie
- Puntius nigrofasciatus
Esplora Black Ruby Barb
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