My Yellow Tang was attacked. Who is the culprit?

[tamama]

I recently introduced my yellow tang in, it has been doing fine for a few days with the old resident - yellow wrass. Yesterday I introduced a cleaner shrimp and a clam in. Now I saw that my yellow tang's top fin was badly damaged. Almost all the fin is gone.

There are only three suspects.

1. Yellow wrass

2. Cleaner shrimp

3. The clam

Which one could it the culprit? How can I stop this...

Thanks in advance.

[tamama]

Could it be that the yellow tang stuck inbetween rocks and try to go out and thus scratched off the top fin?

[tamama]

Caught one crab... haez.. it must have eaten two of my yellow wrass already.

[tamama]

just realised that it killed my crown fish too...

[tamama]

Caught another 3 big crabs...no end..

[inwear]

Bro QT ur live rock in fresh water for a couple of days & ur trouble may gone. Cheers

[hydrox78]

How big is your crab? i have crab that live in my rocks also, but they do not injure my tangs.

Only once when my clown fish seen weak and die , and they come eat their fresh.

I had hermit crab also in my tank, they eat all the unwanted or left over.

[yellowtang]

Its the psychotic yellow wrasse, And the attack can be very vicious. Small are angels, when big become devils. 7th month transformation.

Good Luck

mike

[Sicklid]

How big is your tank?