Resembles a dojo loach, but not exactly. What fish is that? I enjoy the colorful tank and marbles. Please tell us what fish it is -- a slight variation of dojo loach?20 gal. high: planted; 3 white cloud minnows, several RCS, 2 blue shrimp, 5 Amano shrimp, several snails; AC50, Azoo air. 65 gal: planted; 7 rosy barbs, 2 glofish,, 1 zebra danio, 1 rosy red (fathead) minnow, 2 dojo loaches, several snails; AC110 x 2.