It can also mean they are flushing their gills. It's cute but if they do it frequently it could mean they are not getting the oxygen they need, resulting from non-ideal water quality, physical injury to gills or labyrinth organ, or if he isn’t given access to the surface for air.
Keller VT (my favorite fishy), Chrestomanci VT, FishyWishy CT, Swishy HMPK, Corilopsy HM, Arabia HM, Boo Radley CT, Pistacchio CT, Cairo CT, Caden CT, Murry VT, Sandy HM, Allie CT, Cleo and Sumatra
Callie, 1yo cat
Dee Dee, fresia
RIP: Fishy, Wishy, Pandora, Antigone, Sweetie, IMHY,Aiden- I'll always love you
Caleb, my cat and soulmate of 16 years, my love forever