These toys are made from plastic materials. Most listings simply state 'Plastic,' and at least one listing specifies ABS (Acrylonitrile Butadiene Styrene).
Most listings specify two LR44 alkaline button-cell batteries, and several descriptions note that batteries are included in the package.
Product details consistently list the recommended minimum age as 3 years and up.
They use water-activated technology to power a realistic swimming motion. Descriptions note multi-directional movement (up to five directions) and the ability to dive multiple feet when in water.
Several listings describe a water-activated color-change: the fish change color when submerged, and rubbing the scales by hand after removal can return them to the original color.
Single-item listings include one fish; some multi-pack options are offered as a 2‑pack with two figures.
Listings include CPSC choking-hazard warnings about small parts and pair those warnings with the recommended age of 3 years and up.
Review summaries and product descriptions highlight that customers find the toys entertaining and engaging, citing realistic swimming motion, multi-directional movement, and the color-changing effect.