Silvermouth Siphonfish, Jaydia argyrogaster (Weber 1909)

Other Names: Brown-spotted Cardinalfish

A Silvermouth Siphonfish, Jaydia argyrogaster, at Fakfak Peninsula, West Papua, Indonesia. Source: Gerald R. Allen / FishBase. License: All rights reserved

A pale brown to silvery cardinalfish with large brown spots on the sides and distinct brown bands radiating from rear of the eye.

Cite this page as:
Bray, D.J. 2021, Jaydia argyrogaster in Fishes of Australia, accessed 14 Jun 2024,

Silvermouth Siphonfish, Jaydia argyrogaster (Weber 1909)

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North West Shelf, Western Australia, to north of Yeppoon, Queensland. Elsewhere the species occurs in the tropical, Indo-west Pacific.
Shelters among rocks, gorgonians and sponges on flat sand and rubble areas.


Dorsal fin VIl-I,9; Anal fin II,8; Pectoral fin 15-16; Lateral-line scales 24; Predorsal scales 2-3; Developed gill rakers 8-9.
Greatest body depth 2.9-3.5 in SL; preopercular margin serrate; preopercular ridge smooth.


Overall pale with 3-4 horizontal rows of large brown spots on side, belly silvery, 3-4 narrow lines radiating from rear half of eye, and fins pale to dusky.


Occasionally taken as trawl bycatch.


Previously referred to in the literature prior to 2012 as Siphamia argyrogaster [in Paxton et al 1989]; Apogon fuscomaculatus Allen & Morrison, 1996; Apogon argyrogaster.


The specific name argyrogaster is from the Greek argyros (= silver) and gaster (= belly) in reference top the silvery internal pigment of the abdomen (the light organ). 

Species Citation

Apogon argyrogaster Weber 1909, Notes from the Leyden Museum 31(2): 159. Type locality: west coast of New Guinea, depth 32 m.


Bray, D.J. 2021


Atlas of Living Australia

Silvermouth Siphonfish, Jaydia argyrogaster (Weber 1909)


Allen, G.R. 1997. Marine Fishes of Tropical Australia and South-east Asia. Perth : Western Australian Museum 292 pp. 106 pls. 

Allen, G.R. & Erdmann, M.V. 2012. Reef fishes of the East Indies. Perth : Tropical Reef Research 3 vols, 1260 pp. 

Allen, G.R. & Morrison, S. 1996. A new species of cardinalfish (Apogonidae) from northern Australia. Records of the Western Australian Museum 17: 439-442 (described as Apogon fuscomaculatus) See ref online

Gon, O. 1997. Revision of the cardinalfish subgenus Jaydia (Perciformes, Apogonidae, Apogonin  Skelton, P.H. & Lutjeharms, J.R.E. (eds), The J.L.B. Smith Institute of Ichthyology - 50 years. Transactions of the Royal Society of South Africa 51(1996): 147–194.

Kuiter, R.H. & Kozawa, T. 2019. Cardinalfishes of the world. New ed. Seaford, Victoria : Aquatic Photographics, and Okazaki, Aichi, Japan : Anthias, Nexus: 1-198.

Larson, H.K., Williams, R.S. & Hammer, M.P. 2013. An annotated checklist of the fishes of the Northern Territory, Australia. Zootaxa 3696(1): 1-293 

Mabuchi, K., Fraser, T.H., Song, H., Azuma, Y. & Nishida, M. 2014. Revision of the systematics of the cardinalfishes (Percomorpha: Apogonidae) based on molecular analyses and comparative reevaluation of morphological characters. Zootaxa 3846(2): 151–203 

Weber, M. 1909. Note IV. Diagnosen neuer Fische der Siboga-Expedition. Notes from the Leyden Museum 31(2): 143-169

Quick Facts

CAAB Code:37327024


Biology:Mouth brooder (males)

Depth:18–86 m

Habitat:Reef associated

Max Size:6 cm TL

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CAAB distribution map