| Spiny chromis | |
|---|---|
 | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Family: | Pomacentridae |
| Subfamily: | Pomacentrinae |
| Genus: | Acanthochromis Gill, 1863 |
| Species: | A. polyacanthus |
| Binomial name | |
| Acanthochromis polyacanthus (Bleeker, 1855) | |
| Synonyms | |
The spiny chromis (Acanthochromis polyacanthus) is a species of damselfish from the western Pacific. [2] It is the only member of the genus Acanthochromis.
The spiny chromis was first formally described in 1855 as Dascyllus polyacanthus by the Dutch ichthyologist Pieter Bleeker with the type locality given as Batman in the Moluccas. It is the only species in the genus Acanthochromis. [3] The genus name is a compound of acanthus meaning "spine", probably a reference to the 17 dorsal-fin spines, and Chromis , presumably referring to a relationship to that genus. The specific name polyacanthus means "many-spined". [4]
The spiny chromis is found in the western Pacific Ocean. [2] It is found in western and central Indonesia, Papua New Guinea, northern Australia, and all the islands in the Philippines except Luzon. [2] They are also found in Melanesia. This fish usually lives in coral reefs. This fish is found at a depth range of 1 to 65 metres (3.3 to 213.3 ft) but is usually found at a depth range of 4 to 20 metres (13 to 66 ft). [2]
Spiny chromis individuals can grow up to a maximum size of 14 centimetres (5.5 in) as adults. [2] Its fins have 17 dorsal spines, 14 to 16 dorsal rays, 2 anal spines, and 14 to 16 anal rays. [2] This fish is gray on the front and white on the back. The top of its dorsal fin and the bottom of its anal fin is black. Some individuals are gray with a yellow horizontal line in the middle.
This fish is planktonivorous and algivorous, and steals algae from algae-farming species of damselfish. Younger individuals have been known to eat mucus off the adults. [5] [6]
The spiny chromis, unlike many other coral reef fishes, has direct development of their larvae, which means that the parents protect their brood from the egg stage (which are laid on the reef), through hatching and onto the fully developed juvenile stage. [7] There is no pelagic larval stage unlike the vast majority of coral reef fishes. This form of direct development means that the offspring often take up residence on the reef not far from where they were hatched. Consequently, high levels of local adaptation to their local environment has been recorded in this species. [8]
Pomacentridae is a family of ray-finned fish, comprising the damselfishes and clownfishes. This family were formerly placed in the order Perciformes but are now regarded as being incertae sedis in the subseries Ovalentaria in the clade Percomorpha. They are primarily marine, while a few species inhabit freshwater and brackish environments. They are noted for their hardy constitutions and territoriality. Many are brightly colored, so they are popular in aquaria.
Cirrhitidae, the hawkfishes, are a family of marine perciform ray-finned fishes found in tropical seas and which are associated with coral reefs.
Macolor is a genus of marine ray-finned fish, snappers belonging to the family Lutjanidae. They are native to the Indian Ocean and the western Pacific Ocean.
The black-axil chromis, also known as the blackfin chromis or blue-green puller, is a damselfish from the tropical Indo-Pacific. This fish can reach almost 12 centimetres (4.7 in) in length. It inhabits lagoons and reefs after settlement in the late-larval stage, and often occurs in large numbers, feeding above Acropora corals. This fish mostly feeds upon copepods, amphipods, and zoea.
Chromis viridis is a species of damselfish. Individuals tend to be iridescent apple-green and light blue, and reach a maximal length of 10 cm.
The leopard coral grouper, also known as the common coral trout, leopard coral trout, blue-dotted coral grouper or spotted coral grouper, is a species of marine ray-finned fish, a grouper from the subfamily Epinephelinae which is part of the family Serranidae, which also includes the anthias and sea basses. It is found in the Western Pacific Ocean.
The dotted butterflyfish is a species of marine ray-finned fish. a butterflyfish belonging to the family Chaetodontidae. It is found in the Indian Ocean and Pacific Ocean.
The Yellow-dotted Butterflyfish is a poorly known marine ray-finned fish species, a butterflyfish belonging to the family Chaetodontidae. It is found in the Indi-Western Pacific Region.
Caesionidae, the fusiliers, are a family of marine ray-finned fishes in the order Perciformes. The family includes about 23 species. They are related to the snappers, but adapted for feeding on plankton, rather than on larger prey. They are found at reefs in the Indo-Pacific and in the Red Sea.
Platax pinnatus, also known as the longfin batfish, pinnate spadefish, pinnate batfish, pinnatus batfish, dusky batfish, shaded batfish, or red-faced batfish is a species of marine ray-finned fish belonging to the family Ephippidae, the spadefishes and batfishes. This species is found in the western Pacific Ocean and occasionally is kept in marine aquariums.
The magnificent rabbitfish, also known as the magnificent foxface or the Andaman foxface, is a species of marine ray-finned fish, a rabbitfish belonging to the family Siganidae. It is from the eastern Indian Ocean. It occasionally makes its way into the aquarium trade. It grows to a length of 24 cm (9.4 in).
The coral hawkfish, the pixy hawkfish or sharp-headed hawkfish, is a species of marine ray-finned fish, a hawkfish belonging to the family Cirrhitidae. It is native to tropical reefs of the Indian Ocean and the Pacific Ocean. It occasionally is found in the aquarium trade.
Chromis brevirostris, or colloquially known as the shortsnout chromis, is a type of damselfish that was described in 2008 by R. Pyle, J. Earle, and B. Greene in the western Pacific Ocean. This species comes from the genus Chromis which contains eighty species and counting, including C. abyssus, C. circumaurea, C. degruyi, and C. earina. Chromis brevirostris can be found in the Pacific Ocean, located as far north as the Marshall Islands to as far south as Fiji and Vanuatu, and spanning from Palau to Paluwat of the Caroline Islands. The species’ name, Chromis brevirostris, derives from Latin origin; brevis and rostrum mean “short” and “snout” respectively. It is generally abundant in its environment, living at depths of 90–120 metres (300–390 ft), tending to live in groups ranging in size from six to several dozen.
Stegastes beebei, is a species of damselfish found on coral and rocky reefs at depths between 0 and 15 m. They are somewhat territorial, and chase away small intruders. They are omnivorous, grazing on algae and nibbling at small crustaceans and the tentacles of anemones. They are oviparous, with distinct pairing during breeding. The eggs are demersal and adhere to the substrate. Males guard and aerate the eggs.
The Barrier Reef chromis, also known as the yellowback puller or shining puller, is a species of damselfish in the family Pomacentridae native to the east coast of Australia. It is a small fish with a yellowish-brown dorsal surface separated by a dark stripe from its silvery flanks and underside.
The yellowtail reef fish is a species of damselfish in the family Pomacentridae.
Neoglyphidodon carlsoni is a species of damselfish in the family Pomacentridae. It is found in the western and central Pacific Ocean. Adults can grow up to a maximum length of 10 centimetres (3.9 in) This fish is omnivourous. Occasionally, they are found in the aquarium trade.
Johnius amblycephalus, the bearded croaker, also known as the green-backed croaker or sharp-nosed jewfish, is a marine ray-finned fish belonging to the family Sciaenidae, the drums and croakers. This fish is found in the Indian and Pacific Oceans.
Siganus spinus, the little spinefoot, scribbled rabbitfish, blunt-nosed spinefoot, spiny rabbitfish or spiny spinefoot, is a species of marine ray-finned fish, a rabbitfish belonging to the family Siganidae. It is found in the Indo-Pacific region.
Platax boersii, the golden spadefish or Boers’ batfish, is a species of marine ray-finned fish belonging to the family Ephippidae, the spadefishes and bay fishes. This species is found in the Indo-West Pacific.
