there have been rumours about an alien fish species existing, do u believe there are? why?

Question: there have been rumours about an alien fish species existing, do u believe there are? why?
- Keywords:
  alien,
  fact or fiction,
  fish
Asked by livgn1029 to Jo, Kevin, Valeria on 21 Jun 2012.
- Kevin Mahon answered on 21 Jun 2012:
  
  I haven’t heard anything about this! Do you mean fish on another planet? Certainly its possible, but not in any of the planets of this solar system (bar earth – but that wouldn’t make it alien!)
- Joanna Cruden answered on 21 Jun 2012:
  
  Everything is possible; but I think these rumours spring from people referring to the sea creatures found miles down in the ocean, that are only now being found, as alien fish but they don’t mean from another planet.. at least I don’t think they do!

Question: there have been rumours about an alien fish species existing, do u believe there are? why?