silver sharks

as some of you might know, I'm a cichlid man. never owned any other fish
before in my life.

now, I have got a tank for work, but the people here wanted some tropicals,
so this is what I got:

1 silver shark

1 dwarf gourami

1 bristlenose catfish

2 clown loaches

3 Cardinal Tetras

3 black Tetras

personally I don't go for such mindless little creatures as tetras, but the
loaches and cat are pretty cool.

I'm interested in this shark though, but I don't know much about him. I am
feeding a tropical flake food, and for the loaches and cat I am feeding
zuccini. what does the shark eat??