| Hephaestus carbo | |
|---|---|
 | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Perciformes |
| Family: | Terapontidae |
| Genus: | Hephaestus |
| Species: | H. carbo |
| Binomial name | |
| Hephaestus carbo | |
| Synonyms [2] | |
Hephaestus carbo, the coal grunter or black grunter, is a species of freshwater ray-finned fish, a grunter from the family Terapontidae. It is endemic to rivers in northern Australia.
Hephaestus carbo has a deep body which is oblong and oval in shape and also slightly compressed. The dorsal profile is straight from the snout to the nape, then there is a bugle between the head and the start of the dorsal fin. The ventral profile is evenly curved from the tip of the lower jaw to the anus. The upper jaw is slightly longer than the lower jaw and the mouth is oblique and equipped with villiform teeth with much larger teeth in the outer row. The lateral line is continuous and evenly curved. The dorsal fin is continuous, the spiny part is low and contains 11-13 spines and is arched in shape with the fifth to seventh spines being the longest although the longest dorsal spine is shorter than the longest dorsal soft ray, the soft-rayed part of the dorsal fin is rounded and contains 13-14 soft rays. All 3 anal spines are short, robust and curved with the first one being half as long as second soft anal rounded with the third being slightly shorter than the second. The anal fin soft rays are all longer than the spines and there are 11-12 of them. The caudal fin is rounded to truncate. The head, body, and fins are a uniform blackish colour overall, with gold speckles over the head and body. The juveniles are more colourful than the adults and have bright yellow to orange markings with a reddish-orange ring around the eye. [3] The maximum recorded standard length is 33 centimetres (13 in). [2]
Hephaestus carbo has only been recorded from northern Australia where it is found in the Goyder River in the Northern Territory and the rivers which drain into the Gulf of Carpentaria and the Timor Sea in Queensland from the Gregory River in the east to the Jardine River. [3]
Hephaestus carbo shows a preference for clear, flowing water over a sandy substrate, but it is recorded in turbid water with a muddy substrate at times. [4] They prefer the upper reaches of coastal river drainage systems where the water temperatures is always in excess of 15 °C (59 °F). They are predatory and feed on small fishes and crustaceans, particularly prawns. Spawning is known to occur from November and it most likely continues until the early autumn in March. [2] The males do not care for the eggs. [3] These fish attain sexual maturity at a length of around 13 centimetres (5.1 in). [2]
Hephaestus carbo was first formally described in 1916 as Terapon carbo by the Australian zoologists James Douglas Ogilby and Allan Riverstone McCulloch with the type locality given as the upper waters of the Gregory River in Queensland. [5] The coal grunter is very similar to, and closely related to, Raymond's grunter (Hephaestus raymondi) of New Guinea. [2]
The colourful juveniles are found in the aquarium trade. [4]
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Leiopotherapon unicolor, the spangled grunter or spangled perch is a species of ray-finned fish, a grunter from the family Terapontidae. It is endemic to Australia.
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Terapon theraps, the largescaled terapon, banded grunter, banded trumpeter, flagtail grunter, flagtail trumpeter, large-scaled grunter-perch, northern grunter and spiky trumpeter, is a species of marine ray-finned fish, a grunter from the family Terapontidae. This species has a wide distribution in the Indo-Pacific region.
Bidyanus welchi, commonly known as Welch's grunter, black bream, or silver bream, is a species of freshwater ray-finned fish from the family Terapontidae native to Australia.
The blackbar drum is a species of marine ray-finned fish belonging to the genus Pareques in the family Sciaenidae, the drums and croakers. It is found in the western Atlantic Ocean.
Girella zebra, also known as zebrafish or stripey bream, is a species of marine ray-finned fish, a sea chub in the family Kyphosidae. It lives in the Indo-Pacific, where it is endemic to the coastal waters of the southern parts of Australia.
Trachurus delagoa, the African scad, is a species of jack mackerel from the family Carangidae which is found in the south western Indian Ocean.
The Eastern striped grunter is a species of marine ray-finned fish, a grunter from the family Terapontidae. It is found in the Indo-Pacific region where it is found in coastal waters and is an omnivore.
The sea trumpeter is a species of marine ray-finned fish, a grunter from the family Terapontidae. It is endemic to the southeastern Indian Ocean off the southwestern coats of Australia.
The sharpbeak terapon is a species of ray-finned fish, a grunter from the family Terapontidae. It is found in the coastal waters of Asia from southern Japan to the Philippines.
