Sicyopterus erythropterus Keith, Allen & Lord, 2012

Family:  Gobiidae (Gobies), subfamily: Sicydiinae
Max. size:  6.8 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater, amphidromous
Distribution:  Asia: Known only from the Tirawiwa River, a major tributary of the Wapoga River, which flows into the eastern side of Cenderawasih Bay, Papua Province in Indonesia.
Diagnosis:  A Sicyopterus with three clefts (one anteriorly and two midlaterally) on upper lip, with smooth lip and with a second dorsal fin with 1 spine and 10 segmented rays. The sexual dimorphism is well developed with males with fewer scales in LS (51-55 vs. 56-58) and PD (0-15 vs. 19-26) and less teeth in lower jaw (3-6 vs. 7-9) than females. A distinctive red pattern on the anal fin, more or less marked. Caudal fin branched rays 12-13 (Ref. 90225).
Biology: 
IUCN Red List Status: Near Threatened (NT); Date assessed: 17 February 2020 (B1ab(iii)) Ref. (130435)
Threat to humans:  harmless


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