Historical clue formulations

• Freshwater fish with a colorful name — 2022-04-26
• Distinctively colored freshwater fish — 2020-04-15
• Freshwater minnow — 2018-05-04
• Freshwater minnow — 2001-10-23
• Minnow — 1996-04-02
• Freshwater minnow — 1994-10-16