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Apri l'appDescrizione
Amphiprion polymnus, commonly known as the Saddleback Anemonefish, is a species of marine ray-finned fish belonging to the family Pomacentridae, the clownfishes and damselfishes. It is characterized by its dark body coloration, typically dark brown to black, with two prominent white or yellowish vertical bands. The anterior band is located just behind the eye, and the posterior band, which gives the fish its common name, is saddle-shaped and extends from the dorsal fin onto the upper flank. The caudal fin is often white or yellowish. Like all anemonefish, it forms a symbiotic relationship with certain species of sea anemones, providing protection from predators and receiving food scraps, while the anemone benefits from cleaning and protection from anemone-eating fish.
Caratteristiche fisiche
- Forma del corpo
- compressed
- Colorazione
- Body typically dark brown to black, sometimes with a yellowish tinge. Two prominent white or yellowish vertical bands. The anterior band is narrow, located just behind the eye. The posterior band is broader, saddle-shaped, extending from the dorsal fin onto the upper flank. The caudal fin is often white or yellowish, and the pectoral fins can be yellow.
- Tipo di squame
- ctenoid
- Posizione della bocca
- terminal
- Caratteristiche distintive
- Two white or yellowish vertical bands, with the posterior band being saddle-shaped., Dark body coloration (brown to black)., Often has yellow pectoral fins and a white/yellow caudal fin.
- Pinna dorsale
- Single dorsal fin with 10-11 spines and 15-17 soft rays. The spiny portion is typically higher than the soft-rayed portion.
- Pinna caudale
- Caudal fin is emarginate to slightly forked, often white or yellowish.
- Pinna pettorale
- Pectoral fins are well-developed, rounded, and often yellow.
- Pinne distintive
- Pelvic fins are dark, matching the body color, and are located ventrally.
Consigli per l'identificazione
Body Coloration
Look for the dark brown to black body, which distinguishes it from many other lighter-bodied clownfish species.
Band Pattern
The two white or yellowish bands are key. The saddle-shaped posterior band, extending over the back, is particularly diagnostic.
Fin Coloration
The often yellow pectoral fins and white/yellow caudal fin are good indicators, especially when combined with the body and band patterns.
Host Anemone
While not a direct physical feature of the fish, its association with specific host anemones (Heteractis crispa, Stichodactyla haddoni, Stichodactyla mertensii) can aid in identification in the wild.
Habitat
- Tipo di acqua
- saltwater
- Profondità
- 1-30 meters (3-100 feet)
- Ambiente
- Coral reefs, lagoons, and sheltered coastal areas, always in association with host sea anemones. Prefers sandy or rubble bottoms near reefs where host anemones are abundant.
- Areale geografico
- Indo-West Pacific: from the Andaman Sea and Indonesia to the Philippines, New Guinea, and the Solomon Islands, north to southern Japan and south to northern Australia.
Informazioni sull'acquario
- Livello di cura: intermediate
- Temperamento: semi-aggressive
- Dieta: omnivore
- Dimensione minima della vasca: 30 gallons
- Temperatura: 72-78°F (22-26°C)
- Livello di pH: 8.1-8.4
- Durezza: 8-12 dKH
- Compatibilità: Can be kept singly, in a pair, or in a small group if introduced simultaneously into a large tank. Compatible with other peaceful to semi-aggressive reef-safe fish. Care must be taken when introducing new fish to an established pair, as they can become territorial.
- Requisiti speciali: Requires a host anemone for optimal health and natural behavior. Suitable host anemones include Heteractis crispa (Sebae Anemone), Stichodactyla haddoni (Haddon's Carpet Anemone), and Stichodactyla mertensii (Merten's Carpet Anemone). A well-established aquarium with stable water parameters is crucial. Provide plenty of live rock for hiding places.
Informazioni in natura
- Stato di conservazione: least concern
- Stagionalità: Breeds year-round in tropical waters, with peak activity often influenced by lunar cycles and water temperature.
- Prezzo di mercato: Moderate
- Importanza commerciale: medium
- Sapore: Not typically consumed
- Consistenza: Not typically consumed
- Valore nutrizionale: Not typically consumed
Fatti chiave
Protandrous Hermaphroditesbehavior
Amphiprion polymnus, like all clownfish, are protandrous hermaphrodites, meaning all individuals are born male and can later change to female. In a pair, the largest and most dominant individual becomes the female, and the second largest becomes the breeding male.
Anemone Symbiosisbehavior
This species forms an obligate symbiotic relationship with specific host anemones. The fish is immune to the anemone's stinging nematocysts due to a protective mucus layer, allowing it to live safely within the tentacles.
Territorial Defendersbehavior
Saddleback Anemonefish are known to be quite territorial, especially around their host anemone. They will aggressively defend their territory against perceived threats, including other fish and even divers.
Parental Carebehavior
Both male and female A. polymnus participate in parental care. The male typically guards and fans the eggs, which are laid at the base of the host anemone, until they hatch.
Informazioni di sicurezza
Maneggiare con cura- Livello di sicurezza: caution
- Velenoso: No
- Commestibilità: not recommended
- Note sul maneggio: Amphiprion polymnus is not venomous. However, like all anemonefish, it can deliver a painful bite if provoked or handled carelessly, especially larger individuals. Their host anemones can sting humans, so caution should be exercised when interacting with the anemone. For aquarists, avoid direct contact with the anemone's tentacles.
Specie simili
Clark's Anemonefish
Amphiprion clarkii
A. clarkii typically has a more yellowish-orange body, a single white head band, and a white caudal fin. It lacks the distinct saddle-shaped posterior band of A. polymnus.
Sebae Anemonefish
Amphiprion sebae
A. sebae has a dark body with a single white head band and a yellow caudal fin. It lacks the posterior saddle-shaped band and the overall body color can be more yellowish-brown than the darker A. polymnus.
Pink Skunk Anemonefish
Amphiprion perideraion
A. perideraion is pinkish-orange with a single white stripe running along its dorsal side from the snout to the caudal peduncle, and a single vertical white bar behind the eye. It lacks the two distinct vertical bands and dark body of A. polymnus.
Classificazione scientifica
- Regno
- Animalia
- Phylum
- Chordata
- Classe
- Actinopterygii
- Ordine
- Perciformes
- Famiglia
- Pomacentridae
- Genere
- Amphiprion
- Specie
- polymnus
Esplora Saddleback Anemonefish
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