Nomorhamphus rossi Meisner, 2001

Family:  Zenarchopteridae (Internally fertilized halfbeaks)
Max. size:  4.66 cm SL (male/unsexed); 10.01 cm SL (female)
Environment:  pelagic; freshwater
Distribution:  Asia: Philippines.
Diagnosis:  Dorsal soft rays (total): 10-12; Anal soft rays: 14-17; Vertebrae: 39-41. This species is distinguished by the following characters: the second anal-fin ray in males in which segment five is greatly elongate, comprising one half of the ray; spiculus is thick, unsegmented distally; it is offset dorsally at about one fourth its length, with distal tip pointed ventrally (Ref. 44897).
Biology: 
IUCN Red List Status: Endangered (EN); Date assessed: 27 March 2020 (B1ab(iii)) Ref. (130435)
Threat to humans:  harmless
Country info:  Type locality of Nomorhamphus rossi, Intel R., pool in river bordered by waterfall (upriver) and rapids (downriver), Barrovia Barangay hot springs, Baggao Municipality, Cagayan Prov., Luzon (Ref. 44897). Endemic status computed from FishBase data (country records, occurrences records in literature and in point data) on 16/07/08. Also Ref. 94476, 51649.


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