A system for maintaining the health of captive fish in a mobile environment, comprising a live well for containing fish in a fluid medium, a plurality of thermoelectric coolers affixed to the live well, and a live well controller for controlling a direct current applied to the thermoelectric coolers, and a method for maintaining a consistent temperature comprising the steps of setting an initial temperature, applying a current to thermoelectric coolers, reading a new temperature, and adjusting the current based at least in part on the new temperature reading.
