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Type: Article
Published: 2025-12-30
Page range: 190-196
Abstract views: 261
PDF downloaded: 149

A new freshwater ricefish of genus Oryzias (Teleostei: Adrianichthyidae) from northern Taiwan

Institute of Marine Biology; National Taiwan Ocean University; Keelung; 202301; Taiwan; R.O.C.; Center of Excellence for the Oceans; National Taiwan Ocean University; Keelung; 202301; Taiwan; R.O.C.
Taiwan Biodiversity Research Institute; 1 Min-Sheng E. Road; Jiji; Nantou 552; Taiwan; ROC.
Department and Graduate Institute of Aquatic Biosciences; National Charyi University; No. 300; Xuefu Rd.; Luliao Village; Charyi City; 600355; Taiwan; R.O.C.
Pisces New species fish fauna Oryzias fish taxonomy Taiwan

Abstract

A new freshwater ricefish was collected recently from northern Taiwan, which has been identified as a species new to science. The new species, Oryzias cabaranensis sp. nov., can be well distinguished from other congeners by the following unique combination of features: (1) fin-ray counts: dorsal-fin rays 6; anal-fin rays modally 17; pectoral-fin rays 9–10; (2) body compressed laterally, body depth at pelvic origin 20.9–23.3 (22.3), body depth at anal fin origin 17.2–20.1 (18.8); (3) the dorsal-fin origin inserted almost at the vertical of 12th anal-fin rays; and (4) specific coloration: Body translucent, light creamy yellowish, a dotted, longitudinal black line. Belly wall, peritoneum slivery, somewhat subrectangular. Operculum and pre-pectoral region slivery. Eye light bluish. Caudal fin unmarked. Pelvic and anal fins with tiny melanophores. The diagnostic characters and a comparison with related species will also be provided.

 

References

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How to Cite

Chen, I.-S., Yeh, M.-F. & Lai, H.-T. (2025) A new freshwater ricefish of genus Oryzias (Teleostei: Adrianichthyidae) from northern Taiwan. Zootaxa, 5738 (1), 190–196. https://doi.org/10.11646/zootaxa.5738.1.23