i just looked at a picture of a heniochus. at frist glance they have a similar look to the sailfin. tangs can be very agressive with fish that look similar to them. i would say this was the problem. just a guess but the stripes and large fin probably triggered the tang
75g RR. 2x250 14k MH
/ 2x54 T5 act. 29g sump. ASM G1X skimmer. phosban reactor. 80lbs LS
, 90lbs LR
, 2x seio M620.
kole tang, bicolor angel, mandarin dragonette, ocellaris clown / BTA , cleaner shrimp, 2x peppermint shrimp, a variety of soft, SPS
, and LPS
corals, orange linckia star.