7

This sentence includes both とか and など.

金魚の食べ物は虫とか水草などです。

Is there a difference in meaning between the two? Is there a reason to use both like this?

7

「AとかBなど」+ です・だ・が・を・に etc.
("A and/or B, etc.", "things like A and B")

Both of とか and など are used to give examples. とか is more colloquial/conversational than など.

You can also use:

「AやBなど」+ です・だ・が・を・に etc.
「AとかBとか」+ です・だ・が・を・に etc. ← casual
「AやB」+ です・だ・が・を・に etc.
「AとかB」+ です・だ・が・を・に etc. ← casual

But not

×「AやB」+ です・だ・が・を・に etc.
×「AなどBなど」+ です・だ・が・を・に etc.
×「AなどB」+ です・だ・が・を・に etc. 

  • 1
    Is there any difference in sense between AとかBなど and AとかBとか? – bsamek Oct 17 '15 at 13:10
  • I think AとかBとか and AやBなど are more common than AとかBなど. To me, AとかBなどです sounds a bit more formal than AとかBとかです and a bit more casual than AやBなどです. – Chocolate Oct 18 '15 at 13:00
  • Btw, this page might be of some help: How to use とか – Chocolate Oct 18 '15 at 13:04

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