Im at a loss here my 4 year old french angels top and bottom fin all of a sudden became jagged like the teeth of a saw, stopped eating and hid, Lfs told me to treat with maracyn .The fins started healing and started eating and being sociable again..Now it seems to be constipated and has a clumpy,clearish mixed with brown he cant seem seem to dislodge and is hanging upside down, seems like its a little far up in its body to be coming out of its poop hole,,,any ideas..all water perimeters are in noral range and it only fish in tank.Thanks