
1) Chub 
Found on 
https://www.crosswordclues.com/clue/fallfish

 The fallfish, Semotilus corporalis, is a freshwater fish, a chub in the family Cyprinidae. It is found in the northeastern United States and eastern Canada, where it inhabits streams, rivers, and lake margins. It is fished as a game fish, but opinions vary as to its palatability. As far as a game fish goes, it does put up a good fight. The fallfis...
Found on 
http://en.wikipedia.org/wiki/Fallfish

• (n.) A fresh-water fish of the United States (Semotilus bullaris); -- called also silver chub, and Shiner. The name is also applied to other allied species.
Found on 
http://thinkexist.com/dictionary/meaning/fallfish/
 Fall'fish`  noun  (Zoology)
Fall'fish`  noun  (Zoology) A fresh-water fish of the United States (
 Semotilus bullaris ); -- called also 
 silver chub , and 
 Shiner . The name is also applied to other allied species. 
Found on 
http://www.encyclo.co.uk/webster/F/5
  No exact match found.