Killer in my tank

[odi]

I have been missing fishes every once in a while. Tonight, I saw my blue tang which has been missing since morning. I twas half dead. The same blue tang was swimming and feeding actively last night.

To my horor, I soon saw my algae blenny swimming to the blue tang and bite it. The blue tang frantically tried to swim away but the blenny gave chase. Is algae blenny known to be agressive? Liveaquaria classifies this fish to be peaceful. I also have a smaller scorpion blenny. Is this fish also agressive?

[that was niceeeee]

i saw an algae blenny eating or maybe swallowing a goby..the goby with its half body out of the mouth..seems fierce to mi

[bubble_gum]

i have never trusted the algae blenny... the face says it all IMO get snails to clean ur algae... safest bet... i heard of algae blennys chashing tangs b4

[reefy]

Not in my case, my Bris Tooth Tang chasing him around and around...

This fish dont seem to be in good relation with tangs...

[terryansimon]

my algae blenny has not become a poacher. yet.

is there any chance that your fish may have been dead/dying prior to that cannibal act?

[odi]

Unlikely. It was swimming and feeding happily the day before. Any ideas on how to catch this tricky fish?