Help with Beta issue please..

[Conor_K]

So I just notced this a few days ago. She doesn’t seem affected by it. Eating well, moving around normally, no unusual behavior.

I have had her about a month now. It almost looks like somebody nipped her, but I think that would be unusual for any fish in there.

She’s the biggest of the bunch.
Midas Blenny
Pair of Perc Clowns

Recent additions added a week ago:
Starry Blenny
Blue Spotted Puffer
Small Emerld crab

Not sure these photos are good enough to help, but all opinions welcome.
I have every med on @HotRocks list and can setup QT if need be...

Thanks in advance.

 

[ReeferMaddness843]

Emerald is a possibility out of all those and would be my only suspect personally. I watched mine snatch a fairy wrasse by the tail and it was never seen again. He’s a biggun though.

 

[Flippers4pups]

My money is on the clowns. Have you noticed any aggressive behavior?

 

[Conor_K]

I haven’t noticed any thing from the clowns. They like opposite ends if the 4ft tank, she’ll venture over to eat and they don’t pay any attention, but obviously could of happened while I was at work.

I wondered about the crab. It’s less than the size of a quarter though..

Should I just leave her be for now and keep a close eye?

 

[ReeferMaddness843]

Try spot feeding the crab when others are fed. I’d keep an eye. Crabs are opportunistic feeders. Just my 2 cents though based off what I’ve experienced.

 

[Conor_K]

Will give it a shot. He never comes out when the lights are on.

I was under the inpression they only chewed on algae, he’s been doin a great job of knocking that down, but still plenty in there for him.

Thanks for the advice crew.