i just check at night and i have lots of stuff running around the sand bed , the rocks etc
i can see them in the day too but at night ...its really easy to spot them
I have had a mandrin for a month now...it was eating preparred foods when i got it...but i dont think eats them in my tank cuz its usually hanging out deeper in the rockwork hunting/chilling
2 days ago i found it on the ground...they are jumpers!...its still doing great after i tossed it back..colors look vibrant
i also found out that they like to hunt at night