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Heniochus intermedius, commonly known as the Longfin Bannerfish or Red Sea Bannerfish, is a species of marine ray-finned fish belonging to the family Chaetodontidae, the butterflyfishes. It is characterized by its striking black and white banding and an elongated dorsal fin ray, which gives it its common name. This species is endemic to the Red Sea and Gulf of Aden, where it is a common inhabitant of coral reefs.
Fysiske kjennetegn
- Kroppsform
- compressed
- Farge
- The body is predominantly white with two broad, diagonal black bands. The first black band runs from the anterior part of the dorsal fin through the eye to the pelvic fin. The second black band extends from the posterior part of the dorsal fin to the anal fin. The soft dorsal fin, caudal fin, and pectoral fins are typically yellow. The snout is often yellowish.
- Skjelltype
- ctenoid
- Munnposisjon
- terminal
- Særtrekk
- Greatly elongated fourth dorsal fin spine, forming a prominent banner-like filament., Two distinct broad black bands on a white body., Yellow coloration on the posterior fins.
- Ryggfinne
- 11-12 spines, 23-25 soft rays; the fourth dorsal spine is greatly elongated.
- Halefinne
- Truncate to slightly emarginate, yellow.
- Brystfinne
- Yellow, typically 16-17 rays.
- Karakteristiske finner
- Pelvic fins are black.
Identifikasjonstips
Elongated Dorsal Fin Spine
The most distinguishing feature is the extremely long, banner-like fourth dorsal fin spine. This is significantly longer than in most other Heniochus species.
Coloration Pattern
The specific arrangement of two broad black bands on a white body, coupled with yellow posterior fins, is unique to this species within its geographic range.
Geographic Location
Its restricted distribution to the Red Sea and Gulf of Aden is a key identifier, differentiating it from similar-looking species found elsewhere.
Habitat
- Vanntype
- saltwater
- Dybde
- Typically found at depths of 2 to 75 meters, though most commonly observed in shallower reef areas (5-25 meters).
- Miljø
- Associated with coral reefs, often found in lagoons, outer reef slopes, and channels. They prefer areas with rich coral growth and plenty of hiding places.
- Geografisk utbredelse
- Endemic to the Red Sea and the Gulf of Aden.
Akvarieinformasjon
- Stellenivå: intermediate
- Temperament: peaceful
- Diett: omnivore
- Minste akvariestørrelse: 250 liters
- Temperatur: 22-26°C
- pH-nivå: 8.1-8.4
- Hardhet: 8-12 dKH
- Kompatibilitet: Generally compatible with most peaceful reef fish. Can be kept singly, in pairs, or in small groups if introduced simultaneously to a sufficiently large aquarium. Caution should be exercised with small, sessile invertebrates as they may nip at them.
- Spesielle krav: Requires a well-established aquarium with plenty of live rock for grazing and hiding. A varied diet including high-quality flake food, pellets, frozen mysis shrimp, brine shrimp, and marine algae is essential for optimal health and coloration. Good water quality and stable parameters are crucial.
Informasjon fra naturen
- Bevaringsstatus: least concern
- Sesong: Present year-round in its natural habitat.
- Markedspris: Moderate
- Kommersiell betydning: low
- Smak: Not typically consumed
- Konsistens: Not typically consumed
- Næringsverdi: Not typically consumed
Nøkkelfakta
Red Sea Endemicinteresting
Heniochus intermedius is one of the few fish species strictly endemic to the Red Sea and Gulf of Aden, making it a unique component of this region's biodiversity.
Banner-like Finamazing
The common name 'Bannerfish' comes from the dramatically elongated fourth dorsal fin spine, which can be longer than the fish's body itself, waving like a banner in the current.
Dietary Flexibilitybehavior
While primarily feeding on zooplankton and benthic invertebrates, Heniochus intermedius is also known to graze on algae, showcasing its omnivorous nature and adaptability in its reef environment.
Social Behaviorbehavior
Unlike some of its schooling relatives, H. intermedius is often observed singly or in pairs, though small groups can sometimes be found, especially among juveniles.
Sikkerhetsinformasjon
Trygg- Sikkerhetsnivå: safe
- Giftig: Nei
- Spiselighet: not recommended
- Håndteringsnotater: No specific handling precautions are required beyond standard fish handling practices to minimize stress to the fish. They are not venomous and do not possess any known harmful toxins.
Lignende arter
Schooling Bannerfish
Heniochus diphreutes
H. diphreutes has a shorter dorsal fin filament and typically forms larger schools in open water. Its black bands are often less sharply defined and may appear slightly narrower. It also has a much wider Indo-Pacific distribution.
Phantom Bannerfish
Heniochus pleurotaenia
H. pleurotaenia has a more pronounced hump on its forehead and a third, less distinct black band that runs along the dorsal fin base. Its dorsal filament is also shorter than H. intermedius. It is found in the Indo-West Pacific.
Horned Bannerfish
Heniochus varius
H. varius possesses prominent bony 'horns' above its eyes and a more angular body shape. Its coloration is generally darker, often with brownish hues, and its dorsal filament is much shorter. It is found in the Indo-Pacific.
Vitenskapelig klassifisering
- Rike
- Animalia
- Rekke
- Chordata
- Klasse
- Actinopterygii
- Orden
- Perciformes
- Familie
- Chaetodontidae
- Slekt
- Heniochus
- Art
- intermedius
Utforsk Longfin Bannerfish
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