Hi, I have 6 Pygmy Cories in a ten gallon and they are super shy even thought I have a heavily planted tank with water wistera and lots of other plants including duckweed so that the light isn’t too bright. My water parameters are great yet they still hide out in the corners and they freak out when I come up to the tank. I have had them in the tank for about 4 months and I have no other clue of how to get them to come out. Any suggestions? Thank You!!