Toadstool groper

The toadstool groper (Trachypoma macracanthus), also known as the Pacific rockcod, Pacific perch, Strawberry cod and whitespotted sea bass is a sea bass of the subfamily Anthiinae of the family Serranidae, is found in the southern Pacific Ocean. Its length is between 20 and 40 cm.

Toadstool groper

Least Concern  (IUCN 3.1)[1]
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Perciformes
Family: Serranidae
Subfamily: Anthiinae
Genus: Trachypoma
Günther, 1859
Species:
T. macracanthus
Binomial name
Trachypoma macracanthus
Günther, 1859

Description

The toadstool groper is bright orange or red in colour with an irregular pattern of small white spots covering its body and the fins.[2] It has large eyes which are set high on head.[3] The lower border of the preopercular bone has three upward curving spines. The dorsal fin 12 spines while the anal fin contains 6 soft rays.[4] This species grows to around 40 centimetres (16 in) in length.[5] Although other autrhorities give it a maximum length of 22 centimetres (8.7 in).[4]

Distribution

The toadstoll groper has been recorded from New Zealand and the Kermadec Islands, Easter Island, and the Desventuradas Islands of Chile. Around Australia it is found around southwestern and southeastern Australia, Lord Howe Island, Norfolk Island and the Elizabeth and Middleton Reefs.[1]

Habitat and biology

The toadstool groper is found in rocky reefs,[4] as well as in the coral sand areas of lagoons[1] at depths of 10 to 50 metres (33 to 164 ft).[3] Ut frequently hides in caves and underneath overhangs and it feeds on a variety of benthic invertebrates and smaller fishes.[5] They are nocturnal hunters and one of their favourite prey items is "crayfish", leaving their shelters at night to hunt these crustaceans.[6]

Species description

The toadstool groper was first formally decsribed by the German born British ichthyologist Albert Günther in 1859 with the type locality given as Norfolk Island.[7]

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References
  1. Williams, J.T.; Lawrence, A. & Myers, R. (2016). "Trachypoma macracanthus". IUCN Red List of Threatened Species. 2016: e.T69592095A69592874. doi:10.2305/IUCN.UK.2016-3.RLTS.T69592095A69592874.en. Retrieved 7 June 2020.
  2. "Trachypoma macracanthus". Reef Life Survey. Retrieved 7 June 2020.
  3. Dianne J. Bray. "Trachypoma macracanthus". Fishes of Australia. Museums Victoria. Retrieved 7 Jun 2020.
  4. Froese, Rainer and Pauly, Daniel, eds. (2019). "Trachypoma macracanthus" in FishBase. December 2019 version.
  5. "Trachypoma macracanthus (Gunther, 1859)". Solitary Islands Underwater Research Group Inc. 2014. Retrieved 7 June 2020.
  6. "A Big Fish Story". WildBlue. Retrieved 7 June 2020.
  7. Eschmeyer, W. N.; R. Fricke & R. van der Laan (eds.). "Trachypoma macracanthus". Catalog of Fishes. California Academy of Sciences. Retrieved 7 June 2020.
  • Tony Ayling & Geoffrey Cox, Collins Guide to the Sea Fishes of New Zealand, (William Collins Publishers Ltd, Auckland, New Zealand 1982) ISBN 0-00-216987-8
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