Angelphish Potamotrygon MFK Member Dec 13, 2015 3,742 1,683 164 Georgia Aug 28, 2016 #1 I've been wondering about this for a while, and I can't seem to find anything about it online. Both of my Bala sharks open and close their mouths each time they flap their fins. From what I've seen this is normal, but why do they do it?
I've been wondering about this for a while, and I can't seem to find anything about it online. Both of my Bala sharks open and close their mouths each time they flap their fins. From what I've seen this is normal, but why do they do it?
A Allan01230 Polypterus MFK Member Jun 29, 2006 3,864 194 96 Michigan Aug 29, 2016 #2 probally how they breathe all barbs and tetras do this also
