I just discovered (whilst trying to figure out how to spell 'mould') that grotty and grody are considered to be variant spellings of the same word! I would personally disagree. I can see how they could have begun as such, I feel that by now the connotations of each have diverged sufficiently to make them two separate words. In other news, my (mediocre) ability to spell seems to have left me this evening, I keep on having to go back to correct silly typos. Thank goodness I live in the era that developed the backspace key.
I leave you with a picture of a Grody catfish, which I stole from Shannon's blog (hi Shannon!)