Tag Archive: Tangs


TAXONOMY
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii  (ray-finned fishes)
Order: Perciformes (Perch-likes)
Family: Acanthuridae (Surgeonfishes, Tangs, Unicornfishes)

Genus/species   Zebrasoma scopas

GENERAL CHARACTERISTICS: Zebrasoma spp. is a small genus of tangs characterized by round, laterally compressed bodies, large dorsal sail-like fins, and pointed snouts. Because of their snouts, they are able to eat filamentous algae that grow in spots other fishes cannot reach, a talent that also makes them popular in aquariums large and small. Males and females are similar. Color can be variable; most often are shades of gray and brown with a greenish tinge running along the dorsal spine.

A distinguishing feature of surgeonfishes, tangs, and unicornfishes is a modified scale on the caudal peduncle, which forms a scalpel-like sharp blade often covered with toxic slime. These spines are used for species recognition, defense, and competition for mates. They are white in the Brown Scopes Tang. Note: Acanthus means “thorn” or “spine”. Length to 20 cm (8 in)

 

DISTRIBUTION/HABITAT: Widespread throughout the Indo-Pacific from Africa to Japan in lagoons and outer reefs to 50 m (150 ft). Particularly well suited to large aquaria where they can roam.

Brown Scopas Tang

DIET IN THE WILD: Z. scopas graze on algae, usually in groups of 20 individuals. Its numerous, small pharyngeal teeth may have evolved in response to a shift in diet from macroalgae to filamentous algae.

REPRODUCTION: Group and pair spawning have been observed scattering eggs and sperm into the water column.

CONSERVATION: IUCN Red List Least Concern (LC)

REMARKS: Zebrasoma spp. are known to irritate some stony corals to induce the release of zooxanthellae, evidently a sailfin delicacy. 

References

California Academy of Sciences Steinhart Aquarium Philippine Coral Reef and Hidden Reef 2018

Ron’s WordPress Shortlink wp.me/p1DZ4b-BO

fishbase  www.fishbase.org/summary/Zebrasoma-scopas.html

IUCN www.iucnredlist.org/details/178005/0

EOL eol.org/pages/204517/details

Ron’s flickr http://www.flickr.com/photos/cas_docents/4770058557/in/set-72157625992053826/

fishbase http://www.fishbase.org/summary/Zebrasoma-scopas.html

 

TAXONOMY
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii (ray-finned fishes)
Order: Perciformes (Perch-likes)
Family: Acanthuridae (Surgeonfishes, tangs, unicornfishes)

Genus/species: Ctenochaetus strigosus

GENERAL CHARACTERISTICS: Brown as a juvenile and blue or burgundy as an adult with pale yellow spots on head and pale yellow pinstripes on body. Conspicuous, broad yellow ring around the eye.

Max. length: 15 cm (6 in).

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DISTRIBUTION/HABITAT: C. strigosus is found in the Central Pacific in coral-rich areas of deep lagoon and seaward reefs.

DIET IN THE WILD: Herbivore, grazing algae and detritus using its comb-like teeth. Their diet may contain high concentrations of the dinoflagellate that produces ciguatera toxin, and so bristletooths and their predators are known to sometimes concentrate sufficient toxin to cause illness in humans.

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REPRODUCTION: Pelagic spawner. Lifespan 5 yrs or longer.

Goldring Bristletooth aka Spotted Surgeonfish (brown variant)13161055833_2f47ca36cb_b

CONSERVATION: IUCN Least concern

REMARKS: It has also been commonly observed to clean algal growths from the shells of sea turtles in Hawaiian waters.

References

California Academy of Sciences Steinhart Aquarium Philippine Coral Reef 2016

IUCN www.iucnredlist.org/details/177949/0

Ron’s flickr http://www.flickr.com/photos/cas_docents/8679225491/in/set-72157608332652056/  

EOL eol.org/pages/220815/details

fishbase www.fishbase.org/summary/6015

Ron’s WordPress Shortlink  http://wp.me/p1DZ4b-WG

TAXONOMY
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii (ray-finned fishes)
Order: Perciformes (Perch-likes)
Family: Acanthuridae (Surgeonfishes, tangs, unicornfishes)

Genus/species: Acanthurus japonicus

GENERAL CHARACTERISTICS: Like all surgeonfish, A. japonicus are colorful, thin-bodied, oval-shaped. They typically have long continuous dorsal and anal fins and crescent caudal fins. The body is brownish with a white patch on cheek between eyes and mouth; pectoral, anal, and dorsal fins brown with blue highlight at tip. An orange band is found on last third of dorsal fin. Yellow stripes are along base of dorsal and anal fins with a blue tail with yellow bar.  In addition like other surgeonfishes it has a (5)razor-sharp caudal spine located at the base of their caudal fin. 

Length up to 8.3 in.

powder brown tang8748590549_6ab4610498_k

DISTRIBUTION/HABITAT: Found in Asian-Pacific: Sulawesi to Philippines, SW Japan in clear lagoons and shallow (6–36 ft) seaward reefs.

Power Brown Tang

DIET IN THE WILD: Algae.

REPRODUCTION: Group spawner.

CONSERVATION: IUCN, Least concern

References

California Academy of Sciences Steinhart Aquarium Philippine Coral Reef 2016

Ron’s flickr http://www.flickr.com/photos/cas_docents/2779042635/in/set-72157608332652056/

Ron’s WordPress shortlink http://wp.me/p1DZ4b-1aA

fishbase  www.fishbase.org/summary/23375

IUCN  www.iucnredlist.org/details/177977/0

EOL eol.org/pages/225053/overview

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