hey i have a fire eel he is about 30-40cm pretty cool fish,have one of those big helicopters he lives in their with the black ghost knife,an he sticks his head out the tail of the helicopter,but one day i droped a bit of ham in their an both of them straight out for it even fish going nuts over it.. so been hand feeding him that,been doing it for few weeks now. just wondering if its alright to feed them that?