The Enneapterygius etheostomus lives in the demersal, marine, depth range 0 - 21 m environment.
Enneapterygius etheostomus lays eggs on the upper sides of rocks whereas this species uses undersides of rocks as egg-laying substrata. However, the two species often go through small fights. More
310) figure a male Enneapterygius etheostomus in nuptial colours where nearly the entire body is black. While in all Enneapterygius spp. More
Hebiginpo in Japanese (日本語)
筛口双线鳚 in Mandarin Chinese
篩口雙線鳚 in Mandarin Chinese
紧口罗氏三鳍鳚 in Mandarin Chinese
緊口羅氏三鰭鳚 in Mandarin Chinese
가막베도라치 in Korean (한국어)