For the people worried in the notes: no, these fish are fine. They can breathe, they aren’t stuck. They’d spit the pacifiers out if they were problems. They’re doing that because koi often take gravel and other inedible substances into their mouths to ‘chew’ and look for food, and as such are very driven to investigate things with an interesting smell or taste. Like a pacifier. They might be interested in the texture as well. When they’ve decided it’s not food, they’ll spit it out and go investigate something else.
In the meantime, it makes for some very cute pictures.
