“Just keep swimming” in the Adult Clownfish Costume ! Halloween is always more fun with a fish outfit. If the idea of swimming with the fishes fills you with joy instead of fear, you’ll love this unique costume. It comes with the full body suit and the adult standard fits up to size 46. Grab any other animal costumes and make a wild group costume look! Availability: This Clown Fish costume ships within approximately 1-2 business days.