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Biology

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Inhabits rock reef. Benthic (Ref. 75154). In shallow coastal waters, occasionally taken by anglers (Ref. 557). Neither anterolateral glandural groove nor venom gland is present (Ref. 57406).
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Estelita Emily Capuli
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Warty prowfish

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The warty prowfish (Aetapcus maculatus), also known as the smooth prowfish or Tasmanian prowfish, is a species of marine ray-finned fish, an Australian prowfish belonging to the family Pataecidae, It is endemic to the coastal waters of southern Australia where it inhabits mostly rocky reefs. This species is the only member of the monotypic genus Aetapcus.

Taxonomy

The warty prowfish was first formally described in 1861 as Pataecus maculatus by the German-born British ichthyologist Albert Günther with the type locality given as Fremantle in Western Australia.[2] In 1936 the Australian teacher and ichthyologist Eric Oswald Gale Scott classified this species within the monotypic genus Aetapcus.[3] The 5th edition of Fishes of the World classifies the family Pataecidae within the suborder Scorpaenoidei which in turn is classified within the order Scorpaeniformes.[4] Other authorities place the Scorpaenoidei within the Perciformes.[5] A recent study placed the Australian prowfishes into an expanded stonefish clade, Synanceiidae, because all of these fish have a lachrymal sabre that can project a switch-blade-like mechanism out from underneath their eye.[6][7] The name of the genus is an anagram of Pataecus, Scott originally considered this genus to be a subgenus of Pataecus.[8]

Description

The warty prowfish has a compressed, unusually wedge-shaped, elongate body with the skin of adults covered in bumps resembling warts, juveniles have smooth skins. The dorsal fin has its origin in front of the eyes, has between 18 and 22 spines and 12 to 13 soft rays, which are even in height, and is connected to the caudal fin by a membrane and they do not have pelvic fins. The anal fin has between 4 and 9 spines and 3 to 5 soft rays. There are 8 rays in the pectoral fin and 9 in the caudal fin. They have a large head with a near vertical dorsal profile of the snout. The colour is very variable, they are frequently dusky yellow, or greyish to olive-brown, or even orange to red, marked with darker blotches and spots. The spots on the head and body are small while the spots on the dorsal and caudal fins are frequently large, the largest spots are close to the bases of the fins. The maximum published total length of this species is 22 cm (8.7 in).[9]

Distribution and habitat

The warty prowfish is endemic to the waters of southern Australia where it is found from Shark Bay, Western Australia, to Wilsons Promontory, Victoria, and south to Maria Island, Tasmania.[10] This species is found in sheltered coastal waters on reefs, in bays and harbours at depths between 1 and 45 m (3 ft 3 in and 147 ft 8 in). They are frequently found in association with sponges, although they will also use seagrass and seaweed beds to shelter in.[9]

Biology

The warty prowfish is an ambush predator, sitting camouflaged in its habitat and ambushing prey, mainly crustraceans.[9] This species sheds its skin on a regular basis, this was first observed in specimens kept in an aquarium. SHedding occurs every three week or so and it is thought that in these highly dedentary fish a film of organisms colonises the skin and the fish sheds the skin to rid itself of this film.[11] When disturbed these fishes may emit a cloud of distasteful liquid as a protective measure.[9]

References

  1. ^ Froese, Rainer; Pauly, Daniel (eds.) (2022). "Aetapcus maculatus" in FishBase. February 2022 version.
  2. ^ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Aetapcus". Catalog of Fishes. California Academy of Sciences. Retrieved 10 May 2022.
  3. ^ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Genera in the family Pataecinae". Catalog of Fishes. California Academy of Sciences. Retrieved 10 May 2022.
  4. ^ J. S. Nelson; T. C. Grande; M. V. H. Wilson (2016). Fishes of the World (5th ed.). Wiley. pp. 467–495. ISBN 978-1-118-34233-6.
  5. ^ Ricardo Betancur-R; Edward O. Wiley; Gloria Arratia; et al. (2017). "Phylogenetic classification of bony fishes". BMC Evolutionary Biology. 17 (162). doi:10.1186/s12862-017-0958-3. PMC 5501477.
  6. ^ Smith, W. Leo; Smith, Elizabeth; Richardson, Clara (February 2018). "Phylogeny and Taxonomy of Flatheads, Scorpionfishes, Sea Robins, and Stonefishes (Percomorpha: Scorpaeniformes) and the Evolution of the Lachrymal Saber". Copeia. 106 (1): 94–119. doi:10.1643/CG-17-669.
  7. ^ Willingham, AJ (April 13, 2018). "Stonefish are already scary, and now scientists have found they have switchblades in their heads". CNN.
  8. ^ Christopher Scharpf & Kenneth J. Lazara, eds. (10 March 2022). "Order Perciformes (Part 10): Suborder Scorpaenoidei: Families Apistidae, Tetrarogidae, Synanceiidae, Aploacrinidae, Perryenidae, Eschmeyeridae, Pataecidae, Gnathanacanthidae, Congiopodidae and Zanclorhynchidae". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf and Kenneth J. Lazara. Retrieved 10 May 2022.
  9. ^ a b c d Bray, D.J. (2020). "Aetapcus maculatus". Fishes of Australia. Museums Victoria. Retrieved 10 May 2022.
  10. ^ Edgar, Graham J. (2008). Australian Marine Life: The plants and animals of temperate waters (Second ed.). Sydney: New Holland. ISBN 9781921517174.
  11. ^ Mark McGrouther (16 April 2019). "Warty Prowfish, Aetapcus maculatus (Günther, 1861)". Australian Museum. Retrieved 10 May 2022.

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Warty prowfish: Brief Summary

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The warty prowfish (Aetapcus maculatus), also known as the smooth prowfish or Tasmanian prowfish, is a species of marine ray-finned fish, an Australian prowfish belonging to the family Pataecidae, It is endemic to the coastal waters of southern Australia where it inhabits mostly rocky reefs. This species is the only member of the monotypic genus Aetapcus.

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