ok heres whats happened. i have a 25 gallon outgrow tank for a pictus and a silver tip and two iridescents in it but also i have some tetras and platy's in it and today i was looking in there to see how they were doing and one of the platy's was dead kinda expected it but i had five and now theres only three. i've only found the one dead one in there and i cleaned the whole tank out and didn't find the other one. anyone have any idea's on where it could be or have a similar experience.