[GoinSalt]

Well after a go for a reef tank, I realize I don't have the time or money to go full-blown reef so I am going back to concentrating on FOWLR.

I have a 100g tank with about 100lb LR. Current inhabitants include:
- Yellow tang (4-5 inches)
- Squirrel/soldier fish (4-5 inches)
- two black-striped damsels (2 inches)
- 1 blue damsel (2 inches)
- 1 blue-green chromis (2 inches)

The striped and blue damsel are the most recent additions, about 6 months ago. Started with 12, this is what I'm left with. I used to have blue-throat trigger, but she committed suicide (somehow got sucked up in ph)

I wanted to add, hopefully, a butterfly (Pakastani/raccoon). Is this doable?

The squirrel fish is VERY aggressive. The only way any new addition is going to survive is if he's about the same size.

If not b/f, any other suggestions?

Nate

[leebca]

In general a Butterflyfish is reclusive and not very assertive. It will not feed enough in a tank with assertive fish, let alone with any aggressive fish. (I am using the two words intentionally).

With an aggressive fish I think only adding another aggressive fish will have a chance.

Your bio-load is in the neighborhood of about 14 bio-load units. The aquarium, with 100 pounds of live rock rather than the recommended 200 pounds of live rock, can support a bio-load of about 16 units. That doesn't give a lot left over. If you already have crabs, snails, shrimp, etc., the tank is comfortable at its current bio-load limit.

You could add another small Damselfish. They are pretty hardy and will be very assertive. Although a dwarf Angelfish might do well, it should be put through a quarantine process to get it healthy and eating right. After that, it should hold its own in the display. The Tang should move up to a 180 gallon aquarium soon.