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Acanthurus sohal, commonly known as the Sohal Surgeonfish, is a highly territorial and aggressive species of surgeonfish native to the Red Sea and Arabian Sea. It is characterized by its striking coloration and prominent scalpel-like spines on its caudal peduncle. This species is a diurnal herbivore, playing a significant role in maintaining coral reef health by grazing on macroalgae.
Cechy fizyczne
- Kształt ciała
- compressed
- Ubarwienie
- The body is predominantly dark brown to black, with prominent horizontal blue stripes running along the flanks. The dorsal and anal fins are edged in bright blue, and the caudal fin is black with a broad, bright orange-yellow band at its base, transitioning to a black posterior margin. A distinctive bright orange-yellow patch is present around the caudal peduncle, highlighting the scalpel-like spines.
- Rodzaj łusek
- ctenoid
- Ułożenie pyska
- terminal
- Cechy charakterystyczne
- Two prominent, sharp, scalpel-like spines (scapular spines) on each side of the caudal peduncle, which are bright orange-yellow., Striking horizontal blue stripes on a dark body., Bright blue fin margins., Orange-yellow band at the base of the caudal fin.
- Płetwa grzbietowa
- Single dorsal fin with VIII-IX spines and 29-31 soft rays, edged in bright blue.
- Płetwa ogonowa
- Lunate (crescent-shaped) caudal fin, black with a broad orange-yellow band at the base.
- Płetwa piersiowa
- Pectoral fins are translucent to yellowish, with 16-17 rays.
- Charakterystyczne płetwy
- Anal fin with III spines and 23-26 soft rays, also edged in bright blue.
Wskazówki dotyczące identyfikacji
Coloration and Pattern
Look for the dark body with distinct horizontal blue stripes and the bright orange-yellow caudal peduncle and caudal fin base. The blue fin margins are also a key identifier.
Caudal Spines
The two prominent, sharp, orange-yellow scalpel-like spines on each side of the caudal peduncle are unmistakable and unique to this species within its range.
Body Shape
Typical surgeonfish body shape – laterally compressed, oval to disc-shaped, but with a more elongated profile compared to some other Acanthurus species.
Siedlisko
- Rodzaj wody
- saltwater
- Głębokość
- Typically found in shallow waters, from 1 to 20 meters (3 to 65 feet), but can occasionally be found deeper.
- Środowisko
- Inhabits exposed outer reef slopes and surge zones, often in areas with strong currents and abundant algal growth. They are closely associated with rocky and coral-rich environments.
- Zasięg geograficzny
- Endemic to the Red Sea and the Arabian Sea, including the Gulf of Aden, Gulf of Oman, and Persian Gulf.
Informacje o akwarium
- Poziom trudności hodowli: advanced
- Temperament: aggressive
- Dieta: herbivore
- Minimalny rozmiar akwarium: 750 gallons (2839 liters)
- Temperatura: 23-28°C (74-82°F)
- Poziom pH: 8.1-8.4
- Twardość wody: 8-12 dKH
- Kompatybilność: Highly aggressive towards other surgeonfish and similar-bodied fish. Best kept as a single specimen in a very large tank, or with much larger, robust, and dissimilar-looking tankmates. Not reef-safe with delicate corals due to grazing habits.
- Wymagania specjalne: Requires a very large aquarium with ample swimming space and numerous rockwork for grazing and hiding. A mature, well-established tank with strong filtration and excellent water quality is essential. Provide a diet rich in marine-based algae, spirulina, and high-quality vegetable flakes/pellets. Frequent feedings are necessary due to their high metabolism.
Informacje ze środowiska naturalnego
- Status ochrony: least concern
- Sezonowość: No specific seasonal patterns for reproduction or migration are widely documented; present year-round in its range.
- Cena rynkowa: High
- Znaczenie handlowe: low
- Smak: Not commonly consumed due to potential ciguatera poisoning and strong territorial behavior making capture difficult.
- Konsystencja: Firm, white flesh if consumed.
- Sposoby przygotowania: Not recommended for consumption.
- Wartość odżywcza: Specific nutritional data is not widely available due to its infrequent consumption.
Kluczowe fakty
Territorial Aggressionbehavior
Acanthurus sohal is renowned for its extreme territoriality, especially towards conspecifics and other surgeonfish. It will aggressively defend its grazing patch, often engaging in elaborate displays and physical confrontations.
Red Sea Endemicinteresting
This species is largely endemic to the Red Sea and Arabian Sea, making it a signature fish of these regions. Its striking appearance is often associated with the vibrant coral reefs of this area.
Algae Grazerbehavior
As a primary herbivore, the Sohal Surgeonfish plays a crucial ecological role in controlling algal growth on coral reefs. Its continuous grazing prevents macroalgae from overgrowing and smothering corals, thus contributing to reef health.
Scalpel Spinesamazing
The common name 'surgeonfish' comes from the extremely sharp, retractable, scalpel-like spines located on either side of the caudal peduncle. These are used for defense and in territorial disputes.
Informacje o bezpieczeństwie
Niebezpieczna- Poziom bezpieczeństwa: dangerous
- Jadowita: Tak
- Jadalność: not recommended
- Uwagi dotyczące obchodzenia się: Extreme caution must be exercised when handling Acanthurus sohal. The scalpel-like spines on the caudal peduncle are extremely sharp and can inflict deep, painful wounds. These spines are also associated with a mild venom, which can cause swelling, intense pain, and potential secondary infection. Always use thick gloves and appropriate tools if handling is absolutely necessary. Avoid direct contact with the caudal peduncle area.
Podobne gatunki
Arabian Surgeonfish
Acanthurus gahhm
Acanthurus gahhm lacks the prominent horizontal blue stripes and the bright orange-yellow caudal peduncle of A. sohal. It is generally a more uniformly dark brown to black with a white caudal fin.
Powder Blue Tang
Acanthurus leucosternon
While also a surgeonfish with striking coloration, A. leucosternon has a bright blue body, yellow dorsal fin, and a black face mask, distinctly different from the striped pattern of A. sohal.
Klasyfikacja naukowa
- Królestwo
- Animalia
- Typ
- Chordata
- Klasa
- Actinopterygii
- Rząd
- Acanthuriformes
- Rodzina
- Acanthuridae
- Rodzaj
- Acanthurus
- Gatunek
- Acanthurus sohal
Poznaj Sohal Surgeonfish
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