I see that btc almost hit 25k$ this morning and i believe that if btc rise 25k$ most of the altcoins will also rise or follow btc trend, so i think this time will be the very best time to decide what altcoins can give us profit in short term investment if you have any suggestions please extend or let me know.
Investment and short-term doesn't go along, would rather call it trading since you just do it in short-term anyway unless your definition of "short-term" is different than mine.
Would recommend to check the coinmarketcap for the top one since you are looking for short-term trading. Maybe doing some swing-trading could be good in this scenario, so many strategies can be used for this one and as well can give you some brief explanation about what to do and which one to pick on every situation you are in.