Historical clue formulations

• Atlantic fish — 2026-02-01
• Common saltwater baitfish — 2025-03-09
• Roe source — 2023-09-01
• Herringlike fish — 2022-07-21
• Popular baitfish — 2021-10-23
• Bony fish with prized eggs — 2021-02-07
• Variety of herring — 2020-12-02
• Roe source — 2019-01-30
• Herring relative — 2017-04-07
• Kind of roe — 2017-03-11
• Source of valuable eggs — 2016-11-18
• Deep-bodied herring — 2015-08-09
• Herring type — 2015-05-17
• Herringlike fish — 2014-03-04
• Roe source — 2013-07-31
• Sprat relative — 2013-04-11
• Roe source — 2013-03-06
• Source of some highly prized 19-Acrosses — 2011-09-10
• The fish in John McPhee's "The Founding Fish" — 2009-05-24
• Alewife's relative — 2009-03-14
• Cousin of an alewife — 2009-02-28
• Atlantic catch — 2009-02-06
• Roe source — 2009-01-28
• Fish that can detect ultrasound — 2008-11-20
• Roe source — 2007-09-09
• Fish that migrates from seawater to freshwater and back — 2007-08-12
• Kohada, on a sushi menu — 2007-08-05
• Cousin of a herring — 2006-10-08
• Roe source — 2005-05-01
• Certain herring — 2004-07-19
• Roe source — 2003-09-17
• Alewife's cousin — 2002-12-12
• Cousin of a herring — 2002-12-04
• Roe source — 2002-04-07
• Roe source — 2002-02-20
• Roe source — 2001-06-21
• Roe source — 2001-03-05
• Fish that swims upstream — 2001-02-26
• Roe source — 1999-09-26
• Skipjack herring, e.g. — 1999-09-03
• Herring kin — 1999-08-31
• Relative of an alewife — 1999-04-18
• Certain herring — 1999-02-22
• Fish usually caught in the winter — 1999-02-12
• Certain herring — 1998-12-21
• Spawning fish — 1998-12-14
• Variety of herring — 1998-08-02
• Spawning fish — 1998-04-07
• Trawler's haul — 1997-10-29
• Filleted fish — 1997-10-14