Most animal figures are made from plastic; some multi-figure packs specify ABS (Acrylonitrile Butadiene Styrene) for certain parts.
Product details list the suggested age as 3 years and up for both single-figure and multi-figure options.
Descriptions and reviews report realistic swimming motion and directional movement. Listings note the fish can swim in up to five directions and are capable of diving several feet.
The fish are water-activated and begin swimming when placed in water. Many listings describe a color-change effect in water; removing a fish and rubbing its scales is reported to restore its original color for repeat play.
Common options include single-figure packages (1 piece) and multi-figure packs such as 2-packs.