Blue Tang
 

Paracanthurus hepatus is a species of Indo-Pacific surgeonfish. A popular fish in marine aquaria, it is the only member of the genus Paracanthurus. A number of common names are attributed to the species, including regal tang, palette surgeonfish, blue tang (leading to confusion with the Atlantic Acanthurus coeruleus), royal blue tang, hippo tang, flagtail surgeonfish, pacific regal blue tang and blue surgeonfish.

Description

Paracanthurus hepatus has a royal blue body, yellow tail, and black 'palette' design. The lower body is yellow in the west-central Indian Ocean. It grows to 30 cm (12 in.). This fish is rather flat, like a pancake, with a circular body shape, a pointed snout-like nose, and small scales. The blue tang has 9 dorsal spines, 26-28 dorsal soft rays, 3 anal spines, and 24-26 anal soft rays.

Ecology

The species' range is broad, but it is nowhere common. It can be found throughout the Indo-Pacific. It is seen in reefs of East Africa, Japan, Samoa, New Caledonia, and the Great Barrier Reef. The Blue tang would have to be one of the most common and most popular Marine Fish all over the world. They live in pairs, or in a small groups of up to 10 or 12 individuals. These fish reach sexual maturity at 9-12 months of age.

The blue tang is not evaluated by the World Conservation Union (IUCN), but is of low vulnerability.

Diet

As a juvenile, its diet consists primarily of plankton. Adults are omnivorous and feed on plankton, but will also graze on algae. Spawning occurs during late afternoon and evening hours. This event is indicated by a change in color from a uniform dark blue to a pale blue.

Life cycle

Males aggressively court female members of the school, leading to a quick upward spawning rush toward the surface of the water during which eggs and sperm are released. The eggs are small, approximately 0.8 mm in diameter. The eggs are Pelagic, each containing a single droplet of oil for flotation. The fertilized eggs hatch in twenty-four hours, revealing small, translucent larvae with silvery abdomens and rudimentary caudal spines. Blue tangs can also, when faced with danger or dark spaces, make themselves semi-transparent, in order to help with evasion and light passivity, respectively.

Importance to humans

The blue tang is of minor commercial fisheries importance, however, it is a bait fish. The flesh has a strong odor and is not highly prized. This fish may cause ciguatera poisoning if consumed by humans. However, blue tangs are collected commercially for the aquarium trade. Handling the tang risks the chances of being badly cut by the caudal spine. These spines, on both sides of the caudal peduncle, are extended from the body when the fish becomes excited. The quick, thrashing sideways motion of the tail can produce deep wounds that result in swelling and discoloration, posing a risk of infection. It is believed that some species of Acanthurus have venom glands while others do not. The spines are used only as a method of protection against aggressors.

Aquarium life

As juveniles, they require a 40 gallon aquarium, but as adults require a 75 gallon tank. They will eat small crustaceans such as mysids and krill. Adults nibble algae and nori. Having more than one in a small aquarium can cause stress, which can lead to injury from fighting. This fish is reef compatible — will not eat corals or anemones.

Source: wikipedia

cmarzano
cmarzano updated Blue Tang
2015-05-20 00:04:16 -0600
_**Paracanthurus hepatus**_ is a species of Indo-Pacific surgeonfish. A popular fish in marine aquaria, it is the only member of the genus _**Paracanthurus**_. A number of common names are attributed to the species, including **regal tang**, **palette surgeonfish**, **blue tang** (leading to confusion with the Atlantic _Acanthurus coeruleus_), **royal blue tang**, **hippo tang**, **flagtail surgeonfish**, **pacific regal blue tang** and **blue surgeonfish**. Description _Paracanthurus hepatus_ has a royal blue body, yellow tail, and black 'palette' design. The lower body is yellow in the west-central Indian Ocean. It grows to 30 cm (12 in.). This fish is rather flat, like a pancake, with a circular body shape, a pointed snout-like nose, and small scales. The blue tang has 9 dorsal spines, 26-28 dorsal soft rays, 3 anal spines, and 24-26 anal soft rays. Ecology
xmai77
xmai77 updated Blue Tang
2014-03-08 15:52:21 -0700
_**Paracanthurus hepatus**_ is a species of Indo-Pacific surgeonfish. A popular fish in marine aquaria, it is the only member of the genus _**Paracanthurus**_. A number of common names are attributed to the species, including **regal tang**, **palette surgeonfish**, **blue tang** (leading to confusion with the Atlantic _Acanthurus coeruleus_), **royal blue tang**, **hippo tang**, **flagtail surgeonfish**, **pacific regal blue tang** and **blue surgeonfish**. Description _Paracanthurus hepatus_ has a royal blue body, yellow tail, and black 'palette' design. The lower body is yellow in the west-central Indian Ocean. It grows to 30 cm (12 in.). This fish is rather flat, like a pancake, with a circular body shape, a pointed snout-like nose, and small scales. The blue tang has 9 dorsal spines, 26-28 dorsal soft rays, 3 anal spines, and 24-26 anal soft rays. Ecology
kla
kla posted on Blue Tang
2012-05-05 00:26:13 -0600
Blue Tang
 
Blue Tang
 

Fish Specs

Name
Scientific Name
Family
Acanthuridae
Environment
Salt
Min Tank Size
180 gallons
Max Size
12.0 in.
Chemistry
8.1 - 8.4 pH
Temperature
72 - 78 °F
Temperament
Peaceful
Diet
Herbivore
Difficulty
Moderate
Origin
Fiji, Indonesia, Maldives, Solomon Islands
Reef Safe
Yes

Tanks (7)

125-gallon SPS dominated tank - Salt water Aquarium 29g - Salt water Aquarium 50 Gallon Column - Salt water Aquarium 55 column tank - Salt water Aquarium Aquarium Goccia Blu - Salt water Aquarium DSA 90 - Salt water Aquarium Ricardo's Reef - Salt water Aquarium