Bellapiscis medius

Bellapiscis medius
Conservation status
	; Least Concern (IUCN 3.1)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Blenniiformes
Family:	Tripterygiidae
Genus:	Bellapiscis
Species:	B. medius
Binomial name
	Bellapiscis medius; (Günther, 1861)
Synonyms
	Tripterygium medium Günther, 1861; Enneapterygius medium (Günther, 1861); Helcogramma medium (Günther, 1861);

Bellapiscis medius, the twister, is a triplefin fish of the family Tripterygiidae, commonly found around the coast of New Zealand.^[2] Its length is between 5 and 10 cm.^[3]

Habitat

This species is the only triplefin that as an adult lives in intertidal zone habitat.^[4] It can be observed in tidal pools and has adapted to survive the changes in temperature, oxygen saturation and levels of water acidity that accompany living in that habitat.^[4] The abundance of this fish in tidal pools decreases during the winter months.^[5]

Prey

B. medius feeds on small crustaceans including barnacles, molluscs including snails, and amphipods.^[4]

References

^ Clements, K.D. (2014). "Bellapiscis medius". IUCN Red List of Threatened Species. 2014: e.T178948A1551471. doi:10.2305/IUCN.UK.2014-3.RLTS.T178948A1551471.en. Retrieved 20 November 2021.
^ Ayling, Tony; Cox, Geoffrey J. (1982). Collins guide to the sea fishes of New Zealand. Auckland [N.Z.]: Collins. ISBN 0-00-216987-8. OCLC 9506630.
^ Froese, Rainer; Pauly, Daniel (eds.). "Bellapiscis medius". FishBase. November 2005 version.
^ ^a ^b ^c Carson, Sally F.; Morris, Rod (2017). Collins field guide to the New Zealand seashore. Auckland, New Zealand: HarperCollins. p. 307. ISBN 978-1-77554-010-6. OCLC 1012909625.
^ Willis, Trevor J.; Roberts, Clive D. (1996). "Recolonisation and recruitment of fishes to intertidal rockpools at Wellington, New Zealand". Environmental Biology of Fishes. 47 (4): 329–343. doi:10.1007/BF00005047. S2CID 40418986 – via Researchgate.

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[iucn_status_20_November_2021-1] Clements, K.D. (2014). "Bellapiscis medius". IUCN Red List of Threatened Species. 2014: e.T178948A1551471. doi:10.2305/IUCN.UK.2014-3.RLTS.T178948A1551471.en. Retrieved 20 November 2021.

[2] Ayling, Tony; Cox, Geoffrey J. (1982). Collins guide to the sea fishes of New Zealand. Auckland [N.Z.]: Collins. ISBN 0-00-216987-8. OCLC 9506630.

[3] Froese, Rainer; Pauly, Daniel (eds.). "Bellapiscis medius". FishBase. November 2005 version.

[:0-4] Carson, Sally F.; Morris, Rod (2017). Collins field guide to the New Zealand seashore. Auckland, New Zealand: HarperCollins. p. 307. ISBN 978-1-77554-010-6. OCLC 1012909625.

[5] Willis, Trevor J.; Roberts, Clive D. (1996). "Recolonisation and recruitment of fishes to intertidal rockpools at Wellington, New Zealand". Environmental Biology of Fishes. 47 (4): 329–343. doi:10.1007/BF00005047. S2CID 40418986 – via Researchgate.

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