It's not uncommon for polka dot plants and fittonias to be mistaken for each other. I'm guilty of it - I was calling my indoor plant a fittonia for far too long before realizing it was actually a polka dot plant.
Both are compact houseplants of a similar size with beautiful patterned foliage. They also both come in an array of colors, including pink, red, yellow and white, so it's no wonder so many houseplant owners confuse the two.
