I have had 4 cories in a 50 gallon for about 2 weeks now. They are still very skittish when someone is near the tank. Is this normal or is there something I can do? There are plants and plenty of hiding spots for them. Should I get a few more to make them more comfortable, add more plants or just be patient? I watch them when the lights are out and they seem quite happy as they move around the tank. Thanks for any info!