Who Gives A Fish Forums

Blimey, I could've sworn you said 140L, not 125 gallon, that's a fair difference innit.

To be honest, it really depends on your filtration system. I'd say some people might think your tank is already full, or even that it's too small for a tomato clownfish. I'd have to agree with that, unless you're using a top-notch setup with a sump, skimmer, and plenty of liverock. There's no one ...

Most likely nothing to worry about, just one of those quirky things they do.

I've had mine do that too...I've always thought it could be them trying to shake off a parasite, but I wouldn't jump to conclusions without seeing some obvious signs of infection first.

Considering your tank's recent issues, I'd definitely think about adding a UV sterilizer to help keep things clean. Treating the tank with antibiotics might also be a good call, just to be on the safe side.

What's the reason behind that?

Those little boxfish are adorable.

If that clown's getting bullied by an angel, chances are it'll get picked on by at least one of the damsels.

Some gobies, like the more robust species, might work out in your tank. A cinnamon clown, especially if it's bigger than the damselfish, could also do alright. I've had seveflake blue devils before and they weren't aggressive at all, so maybe the devil blue you have isn't as bad as you think ...

Three stripes and blue devils can be pretty feisty, I had some issues with them in the past. You might find it tough to find suitable tank mates for them in a 35-gallon tank. If you're open to returning some fish, I'd consider taking the three stripe and blue devil back and keeping the yellow tails ...