Tamiya 71125 Mechanical Fish Educational Kit  [71125]

Tamiya 71125 Mechanical Fish: Robocraft Educational Model

The Tamiya 71125 Mechanical Fish is a straightforward educational model from the Robocraft Series that demonstrates mechanical linkages and buoyancy in a small, testable design. It is well matched to hobbyists and learners examining basic motion systems.

Movement System Overview

The kit uses a crank arm to oscillate the tail and generate a swimming action. The upper section is buoyant to keep the dorsal fin afloat while the lower body sits in the water, and the tail and lower fins can be altered to vary the swimming trajectory.

Construction and Educational Notes

Assembly requires no cement, making the build quick and beginner friendly. The electric motor needs one AAA battery (not included), illustrating the link between power source and movement in a clear, hands-on way.