| Genicanthus semifasciatus | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Perciformes |
| Family: | Pomacanthidae |
| Genus: | Genicanthus |
| Species: | G. semifasciatus |
| Binomial name | |
| Genicanthus semifasciatus (Kamohara, 1934) | |
| Synonyms [2] | |
Holacanthus semifasciatusKamohara, 1934 | |
Genicanthus semifasciatus, the Japanese swallow, is a species of marine ray-finned fish, a marine angelfish, belonging to the family Pomacanthidae. It is found in the Western Pacific.
Genicanthus semifasciatus is sexually dichromatic; the males and females show different colouration and patterning. The male is has a yellow head and anterior flanks with a darker yellow dorsal area which is marked with dusky vertical bars. The dorsal area of females is greyish brown and white ventrally, with a yellow margin to the dorsal fin with a black head and caudal fin, and black on the head and tail. In both sexes the forked tail narrows at its base to create a "swallow tail". [3] The dorsal fin contains 15 spines and 15-16 soft rays while the anal fin has 3 spines and 17 soft rays. This species attains a maximum total length of 21 centimetres (8.3 in). [2]
Genicanthus semifasciatus is found in the Western Pacific Ocean. Here it is found from southern Japan, including the Ogasawara Islands, the Izu Islands and the Ryukyu Islands, to the northern Philippines. [1]
Genicanthus semifasciatus occurs at depths between 15 and 200 metres (49 and 656 ft). [1] Here it can be found on the seaward sides of rocky and coral reefs. This species is protogynously hermaphroditic and is normally encountered in harems consisting of a male and several females. [2] It feeds on plankton in the water column. [3]
Genicanthus semifasciatus was first formally described in 1934 as Holocanthus semifasciatus by the Japanese ichthyologist Toshiji Kamohara (1901-1972) with the type locality given as Kashiwajima in the Kochi Prefecture of Japan. [4] The specific name is a compound of semi meaning “half” and fasciatus meaning “banded”, referring to the banding on the males’ backs which does not extend onto the abdomen. [5]
Genicanthus semifasciatus is rather infrequently found in the aquarium trade. [3] The specimens which do appear in the trade usually come from the Philippines. [1]
The lemonpeel angelfish, also known as the yellow angelfish, is a species of marine ray-finned fish, a marine angelfish belonging to the family Pomacanthidae. It is found in the Indo-Pacific region.
The Japanese angelfish or Japanese pygmy angelfish, is a species of marine ray-finned fish, a marine angelfish belonging to the family Pomacanthidae. It is found in the western Pacific Ocean.
Genicanthus watanabei, the blackedged angelfish or Watanabe’s angelfish, is a species of marine ray-finned fish, a marine angelfish belonging to the family Pomacanthidae. It is found in the Pacific Ocean.
The sixbar angelfish, also known as the six banded angelfish, is a species of marine ray-finned fish, a marine angelfish belonging to the family Pomacanthidae. It is found in Indo-Pacific region.
Genicanthus bellus, the ornate angelfish, bellus angelfish or bellus lyretail angelfish, is a species of marine ray-finned fish, a marine angelfish belonging to the family Pomacanthidae. It is found in the Indo-Pacific region.
Chaetodontoplus duboulayi, the scribbled angelfish, is a species of marine ray-finned fish, a marine angelfish belonging to the family Pomacanthidae. This species is from the southwestern Pacific Ocean.
Centropyge heraldi, the yellow angelfish or Herald's angelfish is a species of marine ray-finned fish, a marine angelfish belonging to the family Pomacanthidae. It comes from the Pacific Ocean that sometimes makes its way into the aquarium trade.
Centropyge tibicen, the keyhole angelfish, black angelfish, whitespot angelfish or puller angelfish, is a species of marine ray-finned fish, a marine angelfish belonging to the family Pomacanthidae. It is found in the Indo-Pacific region.
Centropyge venusta, the purplemask angelfish is a species of marine ray-finned fish, a marine angelfish belonging to the family Pomacanthidae, It is found in the Western Pacific and is occasionally found the aquarium trade.
Genicanthus lamarck, the blackstriped angelfish or Lamarck's angelfish, is a species of marine ray-finned fish, a marine angelfish belonging to the family Pomacanthidae. It occurs in the Indo-West Pacific region.
Chaetodon guentheri, Günther's butterflyfish or the crochet butterflyfish, is a species of marine ray-finned fish, a butterflyfish belonging to the family Chaetodontidae. It is native to The western Pacific Ocean.
Centropyge vrolikii, known commonly as the pearlscale angelfish or half black angelfish, is a species of marine ray-finned fish, a marine angelfish belonging to the family Pomacanthidae. It is found in the Indo-Pacific.
The Cocos-Keeling angelfish, or Colin's angelfish is a small species of ray-finned fish, a marine angelfish belonging to the family Pomacanthidae. It is found in the Indo-West Pacific region.
Genicanthus personatus the masked angelfish, is a species of marine ray-finned fish, a marine angelfish belonging to the family Pomacanthidae. It is endemic to Hawaii.
Chaetodontoplus mesoleucus, the vermiculated angelfish, is a species of marine ray-finned fish, a marine angelfish belonging to the family Pomacanthidae. It is found in the Indo-West Pacific region.
Genicanthus melanospilos, the spotbreast angelfish, blackspot angelfish or swallowtail angelfish, the family Pomacanthidae. It occurs in the Indo-West Pacific region.
Genicanthus caudovittatus, the zebra angelfish, swallowtail angelfish, and lyretail angelfish, is a species of marine ray-finned fish, a marine angelfish belonging to the family Pomacanthidae. It is found in the Indian Ocean.
Genicanthus takeuchii, the spotted angelfish or Takeuchi’s angelfish, is a species of marine ray-finned fish, a marine angelfish belonging to the family Pomacanthidae. It is found in the northwestern Pacific Ocean
The halfbanded angelfish is a species of marine ray-finned fish, a marine angelfish belonging to the family Pomacanthidae. It is found in the southwestern Pacific Ocean.
The Pitcairn angelfish is a species of marine ray-finned fish, a marine angelfish belonging to the family Pomacanthidae. It is found in the southwestern Pacific Ocean.
