As much as I hate to say it, I can see why the makers of Teddy Tank made it. Parents like to get their kids "Starter pets" to teach responsibility. Fish are considered great starter pets and a lot of parents will get their 5 year old a goldfish because it seems like less work than a puppy. Parents also get their kids stuffed toys to play with and cuddle and explore the mysteries of life with. Then when it's bed time, the kid goes to sleep with the fish on a night stand, teddy bear hugged close, and a night light in the corner for security. From a business perspective, combining all 3 looks like a literal goldmine.
That's why I can't forgive this type of ignorance. Having business skills does not give you fish care skills. No fish are sold in pet stores as travel companions. As much false information as chain pet stores dish out, they are pretty good at telling little kids not to bring their fish tank to the playground or hug them at night while they sleep. If you do not believe me, go to a local Petco, Petsmart, or international equivalent and as the fish section worker, "Is it a good idea to use why fish tank as a stuffed animal night light and hug it while I sleep?" I'm 99.9% sure that even the generic chain fish store worker will say, "NO. Fish tanks should not be carried around like toys."
If you do something that even a chain pet store worker knows is a bad thing, you've reach a level of fish care ignorance I didn't even know existed. XD