odd acting perc. clownfish...

[dfrakes]

i have a 20 gal with a BTA and a coral beauty anglefish, PJ cardinal, 2 chromis. the anglefish and 2 clownfish run up and down the glass, usually in the morning, and go up and down the glass. im worried they are stressed or something

 

[PraireDogging]

That's a lot of fish in a 20 gallon they may just be uncomfortable in the tank. If they are only acting that way in the morning maybe another fish is spooking them at night.

 

[Herk]

I would assume some of the fish are fighting for territory since you do have a lot of fish in that small tank

 

[125mph]

My clowns were tank raised ORA and went up and down the glass the first week I got them too.. They slowly figured it out and started exploring other areas of the tank. I've heard tangs and other fish tend to do this when first introduced but settle down after a bit.