I personally do not recommend this, and those pictures are horrible! Do not look to these pictures as an appropriate way to house these newts. The pictures show an outrageous amount of newts in that tank, by which I mean, very overcrowded. I have personal experience with Paddle tail newts, and they are extremely aggressive. If you do not provide each newt with at least one hide that they can claim as their own, you are guaranteed to have a disastrous outcome. With that being said, even if you did provide 6 different hides for the newts you want, you will probably still have aggression in your tank. THIS IS NOT A COMMUNAL SPECIES! Secondly, although some people do not see aggression when these guys are kept in large numbers, such as the group in the pictures you posted, it is usually due to them being very stressed out. My advice to you, stick to a more communal species, there are numerous varieties to choose from that you widely available to you.
Kay.
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