Sicyopus discordipinnis Watson 1995

Sicyopus discordipinnis from Normanby Island, D'Entrecasteaux Islands, Papua New Guinea. Source: Gerald R. Allen. License: All rights reserved

Males have the lower two thirds of the body between the second dorsal and anal fins, and the caudal peduncle bright red in colour, and a dark stripe along the midsides from behind pectoral-fin base to below the origin of second dorsal fin. In females, this stripe ends in a small spot on the caudal peduncle.

A very small rare freshwater goby found in clear, fast flowing, steep rainforest streams in the Wet Tropics region of northern Queensland.

Cite this page as:
Bray, D.J. 2018, Sicyopus discordipinnis in Fishes of Australia, accessed 22 Sep 2020,

Sicyopus discordipinnis Watson 1995

More Info


Pauls Pocket Creek and Noah Creek, south of Cairns, Queensland. Elsewhere, the species occurs in Papua New Guinea, the Solomon Islands and Indonesia (Irian Jaya). Inhabits clear, fast flowing, high gradient streams with boulders and gravel substrates.


Little is known of the biology and ecology of this species.


IUCN Red List: Data Deficient

Species Citation

Sicyopus discordipinnis Watson, 1995, Ichthyol. Explor. Freshw. 6(3): 273, fig. 1.Type locality: Letak Creek, 25 km southeast of Wewak, Papua New Guinea. 


Bray, D.J. 2018


Sicyopus discordipinnis Watson 1995


Boseto, D. 2012. Sicyopus discordipinnis. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.1. Downloaded on 06 October 2013.

Ebner, B.C., Thuesen, P.A., Larson, H. & Keith, P. 2012. A review of distribution, field observations and precautionary conservation requirements for sicydiine gobies in Australia. Cybium 35: 397–414.

Keith, P., G. Marquet & L. Taillebois. 2011. Discovery of the freshwater genus Sicyopus (Teleostei: Gobioidei: Sicydiinae) in Madagascar, with a description of a new species and comments on regional dispersal. Journal of Natural History 45(43-44): 2725-2746.

Polhemus, D.A., Englund, R.A., Allen, G.R., Boseto, D. & Polhemus, J.T. 2008. Freshwater biotas of the Solomon Islands. Analysis of richness, endemism and threats. Bishop Museum Technical Report 45. Honolulu.

Taillebois, L., M. Castelin, C. Lord, R. Chabarria, A. Dettaï & P. Keith. 2014. New Sicydiinae phylogeny (Teleostei: Gobioidei) inferred from mitochondrial and nuclear genes: Insights on systematics and ancestral areas. Molecular Phylogenetics and Evolution 70: 260-271.

Thuesen, P.A., Ebner, B.C., Larson, H.K., Keith, P., Silcock, R.M., Prince, J. & Russell, D.J. 2011. Amphidromy links a newly documented fish community of continental Australian streams, to oceanic islands of the west Pacific. PLoS ONE 6(10): e26685 (11 pages) PDF Open access

Watson, R.E. 1995. A new species of Sicyopus from Papua New Guinea with a redescription of Sicyopus multisquamatus (Teleostei: Gobiidae: Sicydiinae). Ichthyological Exploration of Freshwaters 6(3): 267-278.

Quick Facts


Conservation:IUCN Data Deficient

Habitat:Freshwater, marine larvae

Max Size:3 cm SL

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