I have a couple Hoplosternum littorale and they are fun little fish. They hand feed tubifex cubes from me at the surface. They are super active and great at sand sifting.
He has been awesome so far, very active and not skittish at all. When I went to the lfs they had a beautiful albino senegal that I really wanted since bichirs are a fish that I have always wanted, but I read that plecos will attack them and I have 2 so I bought this guy instead.