Find Me A Camera

[niloc16]

i'm in the market for a new camera and to be totally honest i know very little. i'm hoping you guys can direct me towards what i need. i know i want a strong zoom to get good quality macro shots (not sure what to look for in specs on a camera for this) i would love to have an acro polyp take up the whole picture , a need it to be able to take fast shots in order to take pics of moving fish. i'm really hoping for the price to be less than $400 preferably drastically less. please help