MY FISH MOVES HIS ROCKS AND MAKE SPACES ALL THROUGH HIS TANK AND HE WILL NOT EAT HIS FOOD UNLESS HE IS VERY HUNGRY HE ALSO MOVED A HEAD SHAPE STONE AROUND IN HIS TANK HE IS A BLUE ZEBRA CICHILD COULD I ADD ANOTHER FISH IN WITH HIM BE IT THE SAME KIND OR DIFFERENT KIND OF CICHILD OR SHOULD I KEEP HIM BY HIMSELF??