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Chromis limbata, commonly known as the Castagnola nera or Azores Chromis, is a species of damselfish belonging to the family Pomacentridae. It is a small, robust fish characterized by its dark coloration and distinctive fin margins. This species is often found in rocky reef environments, forming aggregations. It plays an important ecological role as both a planktivore and a prey item for larger piscivorous fish.
Caratteristiche fisiche
- Forma del corpo
- compressed
- Colorazione
- Adults are typically dark brown to black, often with a bluish or purplish sheen, especially when observed in natural light. The margins of the dorsal, anal, and caudal fins are often edged with a narrow, iridescent blue or white band, which can be more prominent in juveniles and during breeding. Juveniles are generally lighter, often with a more pronounced blue tint.
- Tipo di squame
- ctenoid
- Posizione della bocca
- terminal
- Caratteristiche distintive
- Dark body coloration with iridescent fin margins, Deeply forked caudal fin, Relatively large eyes, Small, terminal mouth
- Pinna dorsale
- Single dorsal fin with 13-14 spines and 10-12 soft rays. The spiny portion is longer than the soft-rayed portion.
- Pinna caudale
- Deeply forked caudal fin, with pointed lobes.
- Pinna pettorale
- Pectoral fins are relatively large and transparent, with 18-20 rays.
- Pinne distintive
- The iridescent blue or white edging on the dorsal, anal, and caudal fins is a key distinguishing feature, particularly in contrast to the dark body.
Consigli per l'identificazione
Coloration
Look for the overall dark brown to black body color, often with a subtle blue or purple iridescence. The most reliable feature is the narrow, bright blue or white margin on the dorsal, anal, and caudal fins.
Fin Shape
Note the deeply forked caudal fin and the relatively long spiny portion of the dorsal fin.
Behavior
Often observed in schools, hovering above rocky reefs or darting into crevices when threatened.
Size
Adults typically reach a maximum standard length of 12-15 cm (4.7-5.9 inches).
Habitat
- Tipo di acqua
- saltwater
- Profondità
- Typically found at depths ranging from 2 to 50 meters, though occasionally observed deeper.
- Ambiente
- Prefers rocky reefs, boulder fields, and areas with abundant algal growth. Often found in clear, well-oxygenated waters, forming schools near the substrate or in the water column above reefs.
- Areale geografico
- Eastern Atlantic Ocean, primarily around the Macaronesian archipelagos (Azores, Madeira, Canary Islands, Cape Verde) and along the coast of West Africa, extending north to Portugal and occasionally into the Mediterranean Sea (e.g., Strait of Gibraltar, Alboran Sea).
Informazioni sull'acquario
- Livello di cura: intermediate
- Temperamento: semi-aggressive
- Dieta: omnivore
- Dimensione minima della vasca: 150 gallons (568 liters)
- Temperatura: 18-24°C (64-75°F)
- Livello di pH: 8.1-8.4
- Durezza: 8-12 dKH
- Compatibilità: Can be kept with other robust, semi-aggressive fish of similar size. Avoid keeping with very small or timid species. Best kept in groups of 5 or more to diffuse aggression.
- Requisiti speciali: Requires ample rockwork for shelter and territories. A well-established tank with good water quality and strong filtration is essential. Provide a varied diet including high-quality flake, pellet, and frozen foods (mysis shrimp, brine shrimp, spirulina).
Informazioni in natura
- Stato di conservazione: least concern
- Stagionalità: Breeding typically occurs during warmer months, with increased activity observed from late spring to early autumn.
- Prezzo di mercato: Low
- Importanza commerciale: low
- Sapore: Mild, slightly fishy
- Consistenza: Flaky, tender
- Metodi di cottura: Fried, Grilled, Baked
- Valore nutrizionale: Good source of protein and omega-3 fatty acids.
Fatti chiave
Macaronesian Endemicinteresting
Chromis limbata is largely endemic to the Macaronesian archipelagos, making it a significant species for regional biodiversity.
Planktivorous Dietbehavior
This species primarily feeds on zooplankton, playing a crucial role in the marine food web by converting planktonic biomass into a form accessible to larger predators.
Territorial Breedingbehavior
During breeding, males become highly territorial, guarding nests of eggs laid on rocky substrates. They exhibit increased coloration and aggressive displays to deter intruders.
Schooling Behaviorbehavior
Chromis limbata often forms large, active schools, which provides protection against predators and facilitates feeding on dispersed plankton.
Informazioni di sicurezza
Sicuro- Livello di sicurezza: safe
- Velenoso: No
- Commestibilità: edible
- Note sul maneggio: No specific handling precautions are required. Like all fish, handle with wet hands to protect their slime coat if necessary. They are not known to be aggressive towards humans.
Specie simili
Damselfish
Chromis chromis
Chromis chromis (Mediterranean Chromis) is generally lighter in coloration, often greyish-brown, and lacks the distinct iridescent blue/white fin margins of Chromis limbata. C. chromis also has a less deeply forked caudal fin and is typically found in the Mediterranean Sea and adjacent Atlantic, with some overlap in distribution.
Bluefin Chromis
Chromis cyanea
Chromis cyanea (Bluefin Chromis) is a Caribbean species and is entirely bright blue, lacking the dark body and specific fin margins of C. limbata. Their geographic ranges do not overlap.
Classificazione scientifica
- Regno
- Animalia
- Phylum
- Chordata
- Classe
- Actinopterygii
- Ordine
- Perciformes
- Famiglia
- Pomacentridae
- Genere
- Chromis
- Specie
- Chromis limbata
Esplora Castagnola nera
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