In my prediction i think every price altcoin is still down because fail and scam project.A good project lock their token to save a fall price. But its not give effect to make their price is up because too little buyer in market.
Will the altcoin raise again in middle 2019 ?
Altcoins will possibly rise up. This is cryptocurrency, after all with the volatile market. It means that if we are having a longest bearish time then there would be a big bounce up. Whether it will happen at the mid-year or before the end of the year it will go back to it's highest peak of price.