Historical clue formulations

• Fish whose name is Spanish for "pretty" — 2026-04-16
• Mackerel family member — 2011-04-09
• Mackerellike fish — 2009-08-30
• Skipjack — 2006-05-06
• Kind of shark — 2005-08-24
• Mackerellike fish — 2004-10-12
• Mackerel cousin — 1998-09-02
• Mackerellike fish — 1994-03-03