ANGEL FISH ACTING NUTTY

Question
GREETINGS AND THANKS FOR THE HELP, I HAVE A MEDIUM SIZE ANGEL FISH AND A ANOTHER A BIT SMALLER, I RECENTLY SET UP A LARGE TANK 110 GALLON HIGH, AND ALL WATER QUALITY IS GREAT, PH LEVEL NEUTRAL,TEMP ABOUT 79 DEGREES AND HAD IT CYCLE FOR ALMOST A MONTH WITH ADDING ALL PROPER CYCLE CHEM'S, STRESS COAT ETC. BEFORE PUTTING FISH IN, AND ACCLIMATED THEM FULLY OVER TIME  BEFORE ADDING. THEY SEEM TO LOOK GOOD, AND EATING OK THE ODD THING IS, THE FIRST WEEK THE LARGER OF THE 2 , WOULD SWIM ABIT ODD GOING UP AND DOWN THE GLASS RAPIDLY REST THEN GO BACK TO THE SAME THING, THEN THAT STOPPED NOW THIS WEEK ALL HE DOES IS POSITION HIMSELF IN THE STRONG CURRENT OF THE FILTER AND STRUGGLES TO SWIM INTO IT WHILE THE CURRENT IS PUSHING HIM AWAY, AND NOW THE SMALLER ONE IS FOLLOWING THE LARGE ONE. AND THAT'S WERE THEY STAY, THERE IS A LOT OF AREA IN THE TANK THAT IS CALM FOR THEM, AND IT HAS PLENTY OF AERATION AS WELL.
COULD THEY BE JUST HAVING FUN ,LOL OR A BIT NUTTY ?
I DON'T SEE ANY SIGNS OF STRESS OR DISEASE AS OF YET.

THANKS,
JOHN

Answer
Dear John,

  Well, you might try lowering your temperature about 2 degrees.  This might help stop this behavior.  I had one who would lay on his side at the top of the tank.  Many times I thought it was dead.  It finally stopped and now 5 months later is still fine.  
  They will also go up and down the glass begging for food.  
It seems that they are just displaying normal behavior.  If there is no signs of disease I wouldn't worry to much.  Just keep an eye out for the next week.  If there behavior doesn't change then this is just them being normal.