Acanthurus olivaceus, the orange-band surgeonfish, the orange-shoulder surgeonfish or the orangebar tang,is a species of marine ray-finned fish belonging to the family Acanthuridae, this family includes the surgeonfishes, unicornfishes and tangs. It lives in the tropical waters of the Indo-west Pacific.
Taxonomy
Acanthurus olivaceus was first formally described in 1801 by the German naturalists Marcus Elieser Bloch and Johann Gottlob Theaenus Schneider with its type locality given as Tahiti in the Society Islands,This species is closely related to the range restricted Marquesas surgeonfish (A. reversus), and together these taxa form a species complex within the genus Acanthurus.The genus Acanthurus is one of two genera in the tribe Acanthurini which is one of three tribes in the subfamily Acanthurinae which is one of two subfamilies in the family Acanthuridae.
Description
The orange band surgeonfish is a deep-bodied, laterally-compressed oval fish, rather over twice as long as it is deep, with a maximum length of 35 cm (14 in), although a more typical length is 25 cm (10 in). Both dorsal and anal fins are long and low, extending as far as the caudal peduncle. The dorsal fin has nine spines and 23 to 25 soft rays while the anal fin has three spines and 22 to 24 soft rays. The tail fin is crescent-shaped, the points growing longer as the fish gets older. The adult fish is greyish-brown; a sharp vertical line usually separates the paler front half of the fish from the darker hind portion. There is a distinctive orange bar, surrounded by a purplish-black margin, immediately behind the top of the gill cover, and blue and orange lines at the bases of the fins. Like all surgeonfish, this species has a pair of scalpel-like scales that project upward from the caudal peduncle. Larger males develop a convex snout which clearly differentiates them from females. Juvenile fish are yellow.
Distribution and habitat
This fish is found in the tropical eastern Indian Ocean and the western Pacific Ocean. Its range extends from Christmas Island and the Cocos Keeling Islands to southern Japan, Western, Northern and Eastern Australia, Indonesia, the Philippines and Hawaii. It is associated with reefs, often on outer slopes and in more exposed locations. As an adult, it is a solitary fish or sometimes joins schools, with a depth range of between about 9 and 46 m (30 and 150 ft), but juveniles are found in shallower water in sheltered locations in small groups.
Ecology
The orange band surgeonfish feeds on detritus and on algae growing on the seabed, as well as the film of diatoms and filamentous algae that grows on sand and other substrates.[2] It often forms schools with parrotfish, tangs and other species of surgeonfish, which all have similar diets; their grazing is important in maintaining biodiversity by keeping rocks free from excessive growth of algae so that coral larvae can find suitable habitat to settle. The fish can change colour from dark to pale almost instantaneously.
Status
The orange band surgeonfish has a wide distribution in the tropical Indo-Pacific region and is moderately common. It is sometimes found in fish markets and in the aquarium trade but is not a species targeted by fisheries. No particular threats have been recognised.
The elegant unicornfish, Naso elegans, is a marine fish known for its distinctive coloration and markings. It has a dark snout, a yellow bar above the eyes, and a yellow dorsal fin with a narrow blue margin and a black submarginal band. The anal and pelvic fins are dark brown, while the caudal fin is yellowish with black upper and lower margins and a black submarginal band. It is also known by other names, including the Blonde Naso Tang and the Lipstick Surgeonfish.
Here's a more detailed description:
Body Shape:
It has an oval-shaped, laterally flattened body.
Coloration:
The overall color is greyish, with a dark snout separated from the grey head by a yellow bar at the eyes.
Fins:
The dorsal fin is yellow with a narrow blue edge and a black submarginal band. The anal and pelvic fins are dark brown. The caudal fin is yellowish with black upper and lower margins and a black submarginal band, and can have long trailing filaments in males.
Caudal Peduncle:
The caudal peduncle (the area connecting the body to the tail) has large keels, especially in males, and the males also have longer filaments growing from the caudal fin.
Size:
It can reach a maximum total length of 45 cm, but more typically around 35 cm.
Other features:
It lacks the prominent horn or protuberance on the forehead that is characteristic of some other Naso species.
The Acanthurus maculiceps, also known as the white-freckled surgeonfish or spotted-face surgeonfish, is a marine fish species found in the Indo-West Pacific region. It is characterized by pale spots on its head and fine lines on its body, a yellow patch below the mouth, and a dark-edged pale tail spine. Adults can grow up to 40 cm in length.
Physical Characteristics:
Body Shape:
It has a deep, compressed body, oval in shape, with a convex head profile in adults.
Coloration:
The fish's base color can range from light yellow to dark brown, with pale spots on the head and fine lines along the body. There's a yellow patch below the mouth, a dark blotch behind the eye, and a yellowish band at the base of the tail.
Caudal Spine:
The caudal spine on the tail is dark-edged and pale, often with a yellowish band on the caudal peduncle.
Pectoral Fins:
The pectoral fins have yellow tips.
Caudal Fin:
Juveniles have a truncate caudal fin, which becomes lunate with filamentous lobes in older specimens.
Other Features:
Habitat: Acanthurus maculiceps is found on outer reefs, usually in solitary or small groups.
Size: It can grow up to 40 cm in length.
Temperature Range: The preferred sea temperature range is 25.3-31°C.
Depth Range: It's typically found at depths between 1 and 15 meters.
Diet: This species is an herbivore, feeding on algae and other plant matter.
The Chromis viridis, commonly known as the blue-green chromis or green chromis, is a small, iridescent damselfish with a bright blue-green or apple-green coloration. They are known for their shimmering, almost iridescent appearance that changes based on light. Males may turn yellow to orange during spawning. They are found in the Indo-Pacific region, inhabiting coral reefs and lagoons.
Key characteristics:
Size: Typically reach a maximum length of 4 inches, but most stay around 3 inches.
Color: Shimmery, iridescent blue-green or apple-green.
Spawning coloration: Males may turn yellow to orange during mating season, sometimes with black coloration.
Habitat: Coral reefs and lagoons, typically in the shallows.
Social behavior: Form large schools, often above branching Acropora corals.
Aquarium suitability: Popular and easy to care for in saltwater aquariums.
Diet: Plankton feeders; readily accept a variety of foods, including flake food, frozen, and live foods.
Territoriality: Can be territorial, especially during mating, and may nip at other fish if crowded.
Natural habitat: Found throughout the Indo-Pacific region, from the African coast to the Pitcairn Islands.
The Black Bar Chromis (Chromis retrofasciata) is a small, peaceful damselfish known for its distinctive coloration and active behavior in aquariums. It has a yellow to tan body with a prominent vertical black bar where the body meets the tail. A neon blue ring often surrounds the eyes and edges of the fins. These fish are native to the Western Pacific and are typically found in coral reefs and lagoons.
Key characteristics:
Appearance: Yellowish-tan body with a vertical black bar, neon blue ring around the eyes and fins.
Size: Reaches about 2 inches in length.
Temperament: Peaceful and reef-safe, but can be aggressive towards smaller or shy fish, especially if housed alone.
Habitat: Found in reef areas and lagoons with plenty of live rock for shelter.
Diet: Omnivorous, should be fed a variety of foods including frozen mysis and brine shrimp, and quality flake food.
Social Behavior: Best kept in groups of six or more, but can be kept singly.
Aquarium Needs: Requires a 30-gallon or larger aquarium with plenty of live rock for hiding and exploration.
The Dunckerocampus dactyliophorus, commonly known as the banded pipefish or ringed pipefish, is a distinctive fish characterized by its elongated, eel-like body and alternating pale and reddish-brown to blackish bands. It has a reddish caudal fin edged with white and often a white or yellow spot in the center. They are relatively small, reaching a maximum length of about 19 cm (7.4 inches).
Key features:
Body Shape: Elongated, eel-like, with a straight body.
Coloration: Alternating pale and red to blackish bands.
Caudal Fin: Reddish with white dorsal and ventral margins.
Other Features: Often has 1-3 white spots in the center of the tail fin and a dark band crossing the opercle.
Other relevant information:
Habitat:
Found in and around rocks and reefs, often in areas with overhangs and caves.
Diet:
Primarily carnivorous, feeding on small crustaceans and zooplankton.
Behavior:
They can be kept in pairs or small groups and are known to be territorial, sometimes acting as cleaners by removing parasites from other fish.
Aquarium Care:
They require specific tank conditions, including water temperature between 72°F-77°F (22°C-25°C) and a pH between 8.1 and 8.4.
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Dosing frees the user from having to remember about fertilization aquarium and provides an even steady measurement.
The Aqua Nova dosing pumps come with the possibility of setting up to 24 dosages for each pump and a large range of intervals (breaks in the administration)
From 0 to 30 days. This allows you to determine very precisely the dosage of fertilizers both in freshwater
and sea aquarium. Very low power consumption through the use of energy-efficient pumps.
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Dosing frees the user from having to remember about fertilization aquarium and provides an even steady measurement.
The Aqua Nova dosing pumps come with the possibility of setting up to 24 dosages for each pump and a large range of intervals (breaks in the administration)
From 0 to 30 days. This allows you to determine very precisely the dosage of fertilizers both in freshwater
and sea aquarium. Very low power consumption through the use of energy-efficient pumps.
Service in Poland, the device covered by a 2 year warranty protection and professional service post-warranty service.
Contains 9-language instruction manual.
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