I had suggested "Torg sees an orange fish.", but it was flagged as a typo and suggested "Torg sees a orange fish" as correct. I believe this suggested "correct" answer to be incorrect. Note, typo reports do not provide a "my answer should be accepted" option.
You are correct. We got carried away in adding variations and put orange in with red even though they require different articles in English. It's been fixed.
Thanks for coming here to report it. None of the report options are good for this type of thing anyway. Coming here to explain what went wrong is best.