Pectoral fins - bite marks.... on Tang & Swallowtail

[Dukereefnz]

Pectoral fins - bite marks.... on Tang & Swallowtail

Brown Tang and Swallowtail - both have bite marks on Pectoral fin, only the one side.
I have not seen and fin biting, I think it happens during the night.

Noticed the Brown Tang first, then days later the Swallowtail.
Fins look clean, does not look like any sort of rot... just nice clean bite mark in a half circle - fish does not seem affected.

I have a Powder Blue that charges around and is a bit of a bully, but both of these fish stand up to it no problem.
The swallowtail is like the tank boss...

I have a pair of Pajama cardinalfish - that were getting on ok, until after QT for ich - the larger one beat up the smaller one and it had bite marks on all fins.
The small PJ is in a QT tank all healed.

Could this be the PJ? or the Powder Blue.... ?

I feed a variety of frozen foods - with nori daily.. and good quality pallets... very well feed.

Powder blue tang
Brown Tang
Large Blue Tang - very peaceful fish...
PJ Cardinal
Swallowtail
2 x leporid wrasses
2 x mandarin
Copperband
Coral bandit shrimp and cleaner shrimp

any ideas?

 

[vetteguy53081]

Pectoral fins - bite marks.... on Tang & Swallowtail

Brown Tang and Swallowtail - both have bite marks on Pectoral fin, only the one side.
I have not seen and fin biting, I think it happens during the night.

Noticed the Brown Tang first, then days later the Swallowtail.
Fins look clean, does not look like any sort of rot... just nice clean bite mark in a half circle - fish does not seem affected.

I have a Powder Blue that charges around and is a bit of a bully, but both of these fish stand up to it no problem.
The swallowtail is like the tank boss...

I have a pair of Pajama cardinalfish - that were getting on ok, until after QT for ich - the larger one beat up the smaller one and it had bite marks on all fins.
The small PJ is in a QT tank all healed.

Could this be the PJ? or the Powder Blue.... ?

I feed a variety of frozen foods - with nori daily.. and good quality pallets... very well feed.

Powder blue tang
Brown Tang
Large Blue Tang - very peaceful fish...
PJ Cardinal
Swallowtail
2 x leporid wrasses
2 x mandarin
Copperband
Coral bandit shrimp and cleaner shrimp

any ideas?

Will be hard to do any assessment without pics or video under white light intensity

 

[Debramb]

Remember Vetteguy said put cell phone on record and leave the room! Our tangs, Hippo and Salfin photobomb us every time we approach. 5-7 years old! There used to us for food!