Normally I hand-feed my monster tank. 

Rays, black ghosts are taking directly from my hand.ut Aro and datnoids always keep their distance. My Blue Base F1 aro roam around my hand and wait when I release food from my hand towards him. Today I offered tilapia after long and the whole tank went crazy.

Arowana couldn't resist showing his inner monster :)

Accidentally bitten my hand...Later he apologized ..lol