It is a very stange malady cslled bubbleitis....
cory's do it, loaches do it, tetra's do it....when u have several different breeds of fish i.e. clown loaches, cories, kuhli loaches guppies and bettas doing it...it can give you the 1970's (I am old i remember those days) dayglo neon orange neon green stare at this mesmerization affect for humans....not exactly sure why the fish do it....but they do
Be worried if one of the fish starts wearing a rassfa hat and they start saying wow man..coooool
cory's do it, loaches do it, tetra's do it....when u have several different breeds of fish i.e. clown loaches, cories, kuhli loaches guppies and bettas doing it...it can give you the 1970's (I am old i remember those days) dayglo neon orange neon green stare at this mesmerization affect for humans....not exactly sure why the fish do it....but they do
Be worried if one of the fish starts wearing a rassfa hat and they start saying wow man..coooool