Blowhole Perch, Caesioscorpis theagenes Whitley 1945
Other Names: Fusilier Sweep, Green Fusilier, Southern Fusilier
Blowhole Perch, Caesioscorpis theagenes, at Fremantle, Western Australia, April 2019. Source: jmartincrossley / iNaturalist.org. License: CC By Attribution-NonCommercial
Summary:
A relatively slender silvery schooling fish with a silvery greenish-yellow back, dorsal and caudal fins, a pointed snout, protrusible jaws, a forked tail, and scales covering much of the soft dorsal and anal fins.
Parenti and Randall (2020) erected the new family Caesioscorpididae for this species.
Parenti and Randall (2020) erected the new family Caesioscorpididae for this species.
Cite this page as:
Bray, D.J. 2020, Caesioscorpis theagenes in Fishes of Australia, accessed 22 Feb 2025, https://fishesofaustralia.net.au/home/species/1744
Blowhole Perch, Caesioscorpis theagenes Whitley 1945
More Info
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Distribution |
Endemic to Western Australia, from Albany to Shark Bay. Forms small to large schools on offshore reefs along the west coast. |
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Features |
Dorsal XI, 20-21; Anal fin III, 18-20; Pectoral fin ii, 14; Pelvic fin I, 5; Caudal fin 16; Lateral line 49 to hypural + 5 on tail; Vertebrae 10+15; Branchiostegals 7. Head acutely pointed, compressed, tapering ventrally, scaly except for tip of snout and chin; mouth small, terminal, upturned; premaxillaries highly protrusible; ascending process of premaxillary extremely long, extending nearly to posterior margin of orbit, maxillary with a unique S-shaped configuration; eyes large, lateral; interorbital convex, scaly. Scales ctenoid; soft dorsal and anal fins covered by scales; pectoral fins shorter than head with lower rays branched; pelvic-fin origin behind level of pectoral-fin base; caudal fin forked. |
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Colour |
Mostly silvery light green above and silvery below. |
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Species Citation |
Caesioscorpis theagenes Whitley 1945, Aust. Zool. 11(1): 21, fig. 11. Type locality: Blowholes, north of Carnarvon, Western Australian. |
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Author |
Bray, D.J. 2020 |
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Resources |
Blowhole Perch, Caesioscorpis theagenes Whitley 1945
References
Hoschke, A., Whisson, G. & Moore, G.I. 2019. Complete list of fishes from Rottnest Island. pp. 150-161 in Whisson, G. & Hoschke, A. (eds.) The Rottnest Island fish book. 2nd ed. Perth: Aqua Research and Monitoring Services.
Hutchins, J.B. 1994. A survey of the nearshore reef fish fauna of Western Australia's west and south coasts — The Leeuwin Province. Records of the Western Australian Museum, Supplement 46: 1-66 figs 1-6
Hutchins, J.B. & Swainston, R. 1986. Sea Fishes of Southern Australia. Complete field guide for anglers and divers. Perth : Swainston Publishing 180 pp.
Hutchins, J.B. & Thompson, M. 1983. The Marine and Estuarine Fishes of South-western Australia. Perth : Western Australian Museum 103 pp. 345 figs.
Parenti, P. & Randall, J.E. An annotated checklist of the fishes of the family Serranidae of the world with description of two new related families of fishes. FishTaxa 5(1): 1-170. See ref online
Whitley, G.P. 1945. New sharks and fishes from Western Australia. Part 2. The Australian Zoologist 11(1): 1-42 figs 1-15 See ref at BHL
