Sinamia is an extinct genus of freshwater amiiform fish which existed in China, Japan, and possibly South Korea during the Early Cretaceous period.

Sinamia liaoningensis is a very large fish and has a much more podgy body form than the other species of the genus but still resembles the bowfin.

Sinamia kukurihime is very similar to the modern-day bowfin. A pyriform-shaped gular has been described for two isolated ossifications of Sinamia kukurihime, whose outline resembles that of K. phattharajani, except for the smooth posterior margin of the first.

• Sinamia zdanskyi Stensiö, 1935 Meng-Yin Formation, Shangdong, China, Early Cretaceous
• Sinamia huananensis Su, 1973 Yangtang Formation, Anhui, China, Early Cretaceous
• Sinamia chinhuaensis Wei, 1976 Guantou Formation, Zhejiang, China, Early Cretaceous
• Sinamia luozigouensis Li, 1984 Luozigou Formation, Jilin, China, Early Cretaceous
• Sinamia poyangica Su and Li, 1990 Shixi Formation, Jiangxi, China, Early Cretaceous
• Sinamia liaoningensis Zhang, 2012 Yixian Formation, Jiufotang Formation, Liaoning, China, Early Cretaceous (Aptian)
• Sinamia kukurihime Yabumoto, 2014 Kuwajima Formation, Ishikawa, Japan, Early Cretaceous (Barremian)
• Sinamia lanzhoensis Peng, Murray, Brinkman, Zhang and You, 2015 Hekou Group, Gansu, China, Early Cretaceous

1. Deesri, U.; Naksri, W.; Jintasakul, P.; Noda, Y.; Yukawa, H.; Hossny, T.E.; Cavin, L. A New Sinamiin Fish (Actinopterygii) from the Early Cretaceous of Thailand: Implications on the Evolutionary History of the Amiid Lineage. Diversity 2023, 15, 491. https://doi.org/10.3390/d15040491

• A New Species of Sinamia (Amiiformes, Sinamiidae) from the Early Cretaceous of Lanzhou Basin, Gansu, China
• Sinamia on Wikispecies
• Sinamia on Wikidata