It can be prepared from fish of the genera Stolephorus, Sardinella and Decapterus, and small shrimp.    From Wordnik.com.  [Chapter 5] Reference

The fish species used in the production of nuoc-mam are usually of the genera Stolephorus, Engraulis, Dorosoma and Decapterus and clupeoids.    From Wordnik.com.  [Chapter 5] Reference

Many species of fish, including sharks and Rastrelliger, Decapterus, Euthynnus and Caranx spp., can be used as the raw material for this product.    From Wordnik.com.  [Chapter 6] Reference