Build a realistic outdoor reef in your pool with these Rainbow Reef Swimming Guppies or bring them into the tub for ocean fun in the bath! These guppies are a ToySplash favorite because they're so versatile. Just like the full-sized Rainbow Reef Swimming Fish, they swim by moving their tails. But these smaller fish are powered by a pull-string, making their natural swimming action whisper quiet for a bath or relaxing soak in a hot tub or spa! And at ToySplash's low prices, you can afford to outfit your reef with a whole school of guppies! 1 guppy per pack, measures 4-inches by 3-inches.