Files: goldfish.webp, goldfish-small.webp
Source page: https://commons.wikimedia.org/wiki/File:The_fish_tank_as_environment_for_freshwater_goldfish.jpg
Creator: AJ Gray
License: CC0 (http://creativecommons.org/publicdomain/zero/1.0/deed.en)
Original candidate: aquarium-a94cc089.jpg
Crop: Tighter crop around the fish; lower equipment edge excluded.

Files: cardinal-tetras.webp, cardinal-tetras-m832.webp
Source page: https://commons.wikimedia.org/wiki/File:Paracheirodon_axelrodi_2.jpg
Creator: Paolo Neo
License: Public domain
Original candidate: aquarium-6e82a937.jpg
Use: home page hero (lighter photo for phones, daily #6 B, 11-10).