What's The Largest Fish You'd Put in a 120Gal?

[StephenA]

I ordered a Small Blue Throat Trigger for my tank and a LARGE trigger showed up. I wanted a 3" and a 7" showed. His size got me thinking, what's the bigest fish I can keep in my 120? There are only 4 other small fish in the tank. The rest is inverts.

Still not sure if I'm going to keep the trigger.

[GaryP]

That would depend on how much bigger its going to get and how many other fish and their sizes you have in the tank. I would be concerned with the trigger eating the inverts, especially shrimp or crabs.

Gary

[StephenA]

All the research I've done on the Blue Throat indicates that he is a surface feeder (plankton). And tends to leave tankmates alone. I've spent about 3 months looking and reading about them. He'll get about 9 in max. Which I think is about as big as my tank can take. I found many cases where people have kept these with clams, shrimp, crabs with no issue. However; you can also find people out there keeping Clown Triggers in Reef tanks. (bad idea)