Question: What salamander should I get?

I am an experienced tropical fish hobbyist and have good experience also in maintaining and breeding dart frogs. I am thinking about venturing into salamanders/newts but I want something whose care/housing is relatively consistent with keeping the former. The parameters for my first salamander/newt would be 1)primarily aquatic 2)colorful 3)several could be kept in a 20 gallon high aquarium 4)temperature in the room almost always mid to low 70sF 5)can be fed almost exclusively on frozen bloodworms, tubifex, and wingless fruit flies.(not worms, crikets etc)
My initial research on this site, the internet and the Devin Edmonds Complete Guide has really not yielded a clear choice of salamander to fit my needs. There is also a bit of inconsistency within those sources as to requirements, specifically the ability to withstand temps in the mid 70s which is a must for me. I would appreciate any and all suggestions as to a species that would best meet my requirements.

looks you should choose a Cynops specie!

1) they almost never leave water
2) especially Cynops ensicauda popei can be very colorfull
3) they are not agressive to each other
4) room temperature will do fine for most species, altough C. ensicauda don't like temperatures below 12 degrees Celcius
5) they can use to frozen food very well, but in my opinion, live food is more natural

Thank You very much for your reply. Cynops popei certainly looks like a great choice. Any others?

I also recommend popei. They're one of the most temperature tolerant.

With the needs your listing then I think Cynops cyanurus would be the ticket for you. CB stock are readily available here in the US to boot.