what do you guys think about piranhas?
I love them thats why I keep them
if you like them?why or why not
They interest me. Some can have quite the personalities, others can be quite boring. My Serrasalmus Geryi has a relationship with one of my dogs. Any other of my dogs can walk by the tank and he stays where he is carefully watching but as soon as my female Mya walks by he swims up front an attacks the glass while she is attacking from the other side. Its a hoot to watch
any particular type you like?
I prefer the Serrasalmus species personally, I like the rare varieties such as the Geryi or Altuvei. I also like the Rhombeus, there is nothing like a 15+ inch nasty Rhom
most agrresive?
Again this depends on each fish. The Elongatus has a pretty nasty temperament as well as the Manueli, I have also had aggressive Spilos and Pygos
least agrresive?
Pygocentrus nattereri (Redbellies) for sure. They are the most skittish fish I have ever kept
fav to own?
My Geryi
least fav to own?
My Reds
best to live with?
Confused by this question. If you are asking best to shoal then the answer is very simple. You can shoal any of the Pygos with one another (Terns, Redbellies, Piraya and Cariba) The only Serrasalmus species that can shoal together is S. Geryi and even then you are taking a chance.
ones that school?
Answered above
also the elongatus piranha?
Cool fish to own
thanks in advance
No problem

If you have any other questions please feel free to msg me anytime. I have been keeping these fish for quite sometime. They are always my first choice.