Johnius amblycephalus

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Johnius amblycephalus
Joamb u0.jpg
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Acanthuriformes
Family: Sciaenidae
Genus: Johnius
Subgenus: Johnius (Johnius)
Species:
J. amblycephalus
Binomial name
Johnius amblycephalus
(Bleeker, 1855)
Synonyms [2]
  • Umbrina amblycephala Bleeker, 1855
  • Umbrina dussumieri Valenciennes, 1833
  • Blythia dussumieri (Valenciennes, 1833)
  • Dendrophysa dussumieri (Valenciennes, 1833)
  • Johnius dussumieri (Valenciennes, 1833)
  • Sciaena dussumieri (Valenciennes, 1833)
  • Umbrina muelleri Klunzinger, 1879

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.

Contents

Taxonomy

Johnius amblycephalus was first formally described as Umbrina amblycephala in 1855 by the Dutch physician, herpetologist and ichthyologist Pieter Bleeker with its type locality given as Ambon Island. Bleeker's name replaced Umbrina dussumieri which had been coined by Achille Valenciennes in 1833 but which was invalid as it was preoccupied by Georges Cuvier's 1830 Corvina dussumieri . [3] This species is classified within the nominate subgenus of Johnius . [4] This species has been placed in the subfamily Otolithinae by some workers, [5] but the 5th edition of Fishes of the World does not recognise subfamilies within the Sciaenidae which it places in the order Acanthuriformes. [6]

Etymology

Johnius amblycephalus has a specific name, amblycephalus, which means "blunt head" and this is an allusion to its relatively blunt snout in comparison to Johnius dussumieri. [7]

Description

Johnius amblycaphalus has its dorsal fin supported by a total of 11 spines and between 23 and 26 soft rays while the anal fin is supported by 2 spines and 7 soft rays. [2] The second to the fifth spines in the first dorsal fin are elongated. The rear edge of the caudal fin can be truncate, rhomboidal or s-shaped. The chin has a single thick, blunt barbel. The overall colour is black or dark brown on the back and whitish or pale yellow on the sides and belly. The spiny dorsal fin is black towards its margin. [4] This species has a maximum published total length of 25 cm (9.8 in) , although 15 cm (5.9 in) is more typical. [2]

Distribution and habitat

Johnius amblycephalus is found in the Indo-Pacific region where it occurs from the Persian Gulf to Papua New Guinea, north to southern China and Taiwan and south to Australia. [1] Its presence off Africa is unconfirmed and may be confusion with Johnius fuscolineatus . [2] It is found at depths between 0 and 28 m (0 and 92 ft) in shallow coastal waters and estuaries where there are sand, mud or muddy sand substrates as well as among soft corals, sponges, antipathrians, and algae. [1]

Related Research Articles

<span class="mw-page-title-main">Sciaenidae</span> Family of fishes

Sciaenidae is a family of ray-finned fishes belonging to the order Acanthuriformes. They are commonly called drums or croakers in reference to the repetitive throbbing or drumming sounds they make. The family consists of about 293 to 298 species in about 66 or 67 genera.

<i>Argyrosomus</i> Genus of fishes in the drum family, Sciaenidae

Argyrosomus is a genus of marine ray-finned fishes belonging to the family Sciaenidae, the drums. The fish in this genus are large and are commonly targeted as game fish.

The striped croaker, also known as the St Lucian corvina, is a species of marine ray-finned fish belonging to the family Sciaenidae, the drums and croakers. This species is found in the western Atlantic Ocean in the Caribbean Sea and Gulf of Mexico.

<i>Cynoscion</i> Genus of fishes

Cynoscion is a genus of marine ray-finned fishes belonging to the family, Sciaenidae, the drums and croakers. These fishes are found off the coasts of North and South America in the western Atlantic and eastern Pacific Oceans. Many fishes in this genus have been given the common name weakfsh.

<i>Boesemania</i> Genus of freshwater fish

Boesemania is a monospecific genus of freshwater fish in the family Sciaenidae. This genus contains the single species Boesemania microlepis. Also known as the Boeseman croaker and smallscale croaker, this fish lives in southeast Asian rivers.

<i>Corvula</i> Genus of fishes

Corvula is a genus of marine ray-finned fishes belonging to the family Sciaenidae, the drums and croakers. These fishes are found in the western Atlantic Ocean and the central eastern Pacific Ocean.

<i>Bairdiella</i> Genus of fishes

Bairdiella is a genus of marine ray-finned fishes belonging to the family Sciaenidae, the drums and croakers. These fishes are found in the western Atlantic and eastern Pacific Ocean.

<span class="mw-page-title-main">Reeve's croaker</span> Species of fish

Reeve's croaker, also known as the goldbelly croaker, golden corvina, yellowfin croaker or yellowfin corvina, is a species of marine ray-finned fish belonging to the family Sciaenidae, the drums and croakers. This species is found in the coastal waters of the Indo-Pacific region. It is the only species in the monospecific genus Chrysochir.

<i>Atractoscion</i> Genus of fishes

Atractoscion is a genus of marine ray-finned fished belonging to the family Sciaenidae, the drums and croakers. The fishes in this genus are found in the Atlantic, Indian and Pacific Oceans.

<i>Argyrosomus inodorus</i> Silver kob, a fish in the drum family Sciaenidae

Argyrosomus inodorus, the mild meagre or silver kob, is a species of marine ray-finned fish belonging to the family Sciaenidae, the drums and croakers. The species is found off southern Africa where it is an important target species for hook and line fisheries.

<i>Johnius</i>

Johnius is a genus of marine ray-finned fishes belonging to the family Sciaenidae, the drums and croakers. They are commonly known as croakers due to their ability to produce purring, croaking and knocking sounds. The sounds are produced mainly at night and are thought to be either involved in defense or for courtship.

<i>Argyrosomus hololepidotus</i> Species of fish

Argyrosomus hololepidotus, also known as the Madagascar meagre or southern meagre, is a species of marine ray-finned fish belonging to the family Sciaenidae, the drums and croakers. The species is endemic to Madagascar and the Indian Ocean.

The prickly croaker is a species of marine ray-finned fish belonging to the family Sciaenidae, the drums and croakers. The species is found in the Indo-West Pacific around southeast Asia. It is the only species in the monospecific genus Aspericorvina.

<span class="mw-page-title-main">Geelbeck croaker</span>

The geelbeck croaker, also known as the African weakfish or Cape salmon, is a species of marine ray-finned fish belonging to the family Sciaenidae, the drums and croakers. This species is found in the southwestern Indian Ocean off southeastern Africa.

The yellowtail croaker, also known as the yellowtail jewfish, is a species of marine ray-finned fish belonging to the family Sciaenidae, the drums and croakers. This species is found in the soutwestern Pacific Ocean off northern Australia and southern New Guinea. It is the only species in the monospecific genus Austronibea.

Ctenosciaena is a genus of marine ray-finned fishes belonging to the family Sciaenidae, the drums and croakers. These fishes are found in the Western Atlantic and southeastern Pacific Oceans.

The bluestreak drum, also known as the bluish croaker, is a species of marine ray-finned fish belonging to the family Sciaenidae, the drums and croakers. It is the only species in the monospecific genus Elattarchus. This species is found in the central eastern Pacific Ocean along the coasts of the Americas.

<i>Isopisthus</i>

Isopisthus is a genus of marine ray-finned fishes belonging to the family Sciaenidae, the drums and croakers. These fishes are found in the western Atlantic and eastern Pacific Oceans.

<i>Johnius dussumieri</i>

Johnius dussumieri, the sin croaker, Dussumier's croaker, Dussumier's silver jewfish, sharptooth hammer croaker or whiskered croaker, is a marine ray-finned fish belonging to the family Sciaenidae, the drums and croakers. This fish is found in the Indian Ocean.

<i>Johnius carutta</i>

Johnius carutta, the karut croaker or purple jewfish, is a species of marine ray-finned fish belonging to the family Sciaenidae, the drums and croakers. This species is found in the western Indian Ocean.

References

  1. 1 2 3 Nguyen Van, Q.; Sasaki, K.; Hoshino, K.; et al. (2020). "Johnius amblycephalus". IUCN Red List of Threatened Species . 2020: e.T49173495A49230902. doi: 10.2305/IUCN.UK.2020-1.RLTS.T49173495A49230902.en . Retrieved 15 May 2023.
  2. 1 2 3 4 Froese, Rainer; Pauly, Daniel (eds.) (2023). "Johnius amblycephalus" in FishBase. February 2023 version.
  3. ↑ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Johnius". Catalog of Fishes . California Academy of Sciences . Retrieved 15 May 2023.
  4. 1 2 Kunio Sasaki (2022). "Family Sciaenidae Croakers, Drums and Cobs". In Phillip C Heemstra; Elaine Heemstra; David A Ebert; Wouter Holleman; John E Randall (eds.). Coastal Fishes of the Western Indian Ocean Volume 3 (PDF). South African Institute for Aquatic Biodiversity. pp. 389–414. ISBN   978-1-990951-30-5.
  5. ↑ Kunio Sasaki (1989). "Phylogeny of the family Sciaenidae, with notes on its Zoogeography (Teleostei, Peciformes)" (PDF). Memoirs of the Faculty of Fishes Hokkaido University. 36 (1–2): 1–137.
  6. ↑ J. S. Nelson; T. C. Grande; M. V. H. Wilson (2016). Fishes of the World (5th ed.). Wiley. pp. 497–502. ISBN   978-1-118-34233-6.
  7. ↑ Christopher Scharpf & Kenneth J. Lazara, eds. (9 March 2023). "Series Eupercaria (Incertae sedis): Families Callanthidae, Centrogenyidae, Dinopercidae, Emmelichthyidae, Malacanthidae, Monodactylidae, Moronidae, Parascorpididae, Sciaenidae and Sillagidae". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf and Kenneth J. Lazara. Retrieved 15 May 2023.
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