Fish related if you count Koi. Used a season and a half until my new golden puppy decided it made a good swimming pool. It's about 100 gallons, I can send you pictures. Purchased at Lowes. Free if you come get it! Also includes a waterfall liner piece, and a plant basket. But no pump or filter (they were eaten by my puppy also) Lol. Also have a non running rototiller, if you want that to mess with and try to get running. The sooner you get them the better. Can text pics 303-968-8735