An Lon Dubh wrote:
I'd say you are right. I can only think of few circumstances where the sentence is sensible in English, such as Italian-American English:
"So, right, I have the fish and I eat it and he says...."
A few English dialects use the present as a way of strongly visualising the past.
In Irish however, it doesn't really make sense as "Ithim" is habitual, so it should be "Bíonn" rather than "Tá" to match, i.e.
Bíonn iasc agam agus ithim é
in Hiberno-English:
I do have a fish and I do eat it.
That was my impression as well. I've been trying to think under what circumstances anyone would phrase it this way, and could only come up with things like the examples you mention, which would seem like odd circumstances for a language course!
The only other thing I could come up with was maybe an answer to someone who over-anxiously asks "Do you have a fish? Do you even EAT fish?" But even then, a more natural answer (in the affirmative) would be something like "tá iasc agam, agus ithim, cinnte" (but not "ithim é"). And even that seems like a rather oddly specific situation!
Redwolf