I hate to be the bringer of bad news but, as much as I would LOVE to have this happen, and possibly play a part in it, I don't think this would take.
The best form of advertising is through word of mouth, because to be frank, people don't read. I have worked in several places before that have signs with varying information, and the only ones that people read are for determining which bathroom to go to (even then I've seen...mistakes.). There are signs right in front of the printer on how to use it where I work, yet I get daily questions on how to print. The instructions are LITERALLY taped to the printer.
How many people have even tripped over those: CAUTION! WET FLOOR! signs? It's embarrassing.
Also, as newarkhiphop said, most of the "Information" on the internet, and even through word of mouth is relatively misinformed or plain incorrect...so we should expect the same treatment from other people who believe they are incredibly well informed.
As per my marketing class, the three main things that "sell" and psychologically attract people to advertisements are: Sex, babies, fuzzy animals (emphasis on the fuzzy).
The majority of pet owners have dogs or cats (I guess horses too), and as we all well know here, said majority of pet owners have the "It's just a fish" kind of thinking. Most of my rez-mates think fish are "high-maintenance decorations". A few sarcastic people are like: "If you love fish so much, why do you eat fish?"...I sarcastically respond with: "I eat dog, too"
I'm sure many people are aware of the website deviantArt. If you look up "Fish" in the search, I think about 50% of them are pictures of a fish in either a lightbulb casing or a wineglass. Understandably most of them are in there for a few minutes just to take a photo, but everybody will be all: OMG! THIS IS ART! I LOVE THE COLOURS OF YOUR FISH!!11oneeleven. However, try putting a dog in relatively similar situation and you'll get PETA followers all up in your face.
I've honestly just have tried to come to terms with the fact that other than the cool people, nobody gives a second through towards fish. Nobody truly understands that we love our fish just as much as we love our family (including the dog/cat, haha). Nobody even understands WHY.
However, my feedback aside, ignorant people aside...I want to help. I don't care if I have to be the next MLK for fish, I want to help. Fish are beautiful and exotic creatures just like any other animal on this earth.
To be totally honest, even before you posted this, I've been wanting to write a news article on deviantArt about people's portrayal of fish in the deviantArt community. SJones, now that you've posted this, I think I have found my resolve. Let me know if you need any help at all...I've had training in CSS, HTML and PSP (Photoshop).