Baby fish are noisier than expected
Gray snapper larvae in open water may be able to communicate with knocks and growls
FISH BABY TALK Adult gray snappers make noises, and recordings now show that at night, young larvae still in open water make chirpier versions of the same sounds.
Brian Gratwicke/Flickr (CC BY 2.0)
Larval fish can produce some tiny growls and little percussive knocks.