[2] The specific name moltrechti honors Arnold Moltrecht [lv; ru], a Latvian entomologist, lepidopterist, and ophthalmologist; while stationed in Vladivostok he also traveled and collected in Taiwan.

The hidden surfaces of the hind legs are red or orange with black spots.

[4] Zhangixalus moltrechti occurs in forests, orchards, and tea plantations between 0 and 2500 meters above sea level.

[1][4] Breeding takes place in bodies of standing water, such as ponds, pools, cisterns, and blocked roadside ditches.

The eggs are laid in foam nests above the water, attached to branches of trees, bushes, or walls.