Or that the 500g is also too small. Not that catching a fish and taking cortisol samples could influence the results :)
Ideally, there is no such thing as a tang suitable for a 75g tank. However, people are determined, so there are a few that have been suggested that would do ok. I've had some of these in a 75g, and they did not appear to require therapy.

My fish are all retarded so it doesn't matter but I think I require therapy. :biggrin: so had to say it .

I'm not sure why some people single out Tangs for their aquarium suitability. When it comes down to it no fish is really suitable for an aquarium. I doubt they can tell the difference between a 50 and a 500 gallon when they're use to an ocean.

Agreed. I'm sure an adult angel is just as happy in a 75g as a tang. I think tangs get more focus since most of the species cover a lot of ground. Although, I did read once that a pair of angels will claim over a square kilometer as a breeding territory. So ya, a tank just doesn't cut it.

I've had various tangs in a 75g, and honestly, they were no more stressed in there than in my current 180.

The 6 foot argument is pretty weak if you give this much thought. All shades of the same colour and all of our tanks are too small. naesco your old bull nose 6 footer was one of the smallest 6 footers you can buy. Personally I'd aim for a tank with the length and turn around width of a standard 180 as a feel good minimum for anything besides your kole and similar tangs. In the end it's us feeling a bit better about keeping things we really shouldn't. My tank is over stocked as far as tangs go too with just two! I find it a bit amusing that the tang police front man on canreef had as many tangs as he did in a tank that was what... 135 gallons? My kole in my 97 was likely more comfy than the acanthurus species in your old tank.

I agree. My flame wrasse travelled the glass for a week. But now more than comfy. I wunder if the lack of predetors and a constant food sorce helps them climatize to tank life

Yellow tang was one of my favorites for over 10 years too, but this time I want to get something different. Anyway, one of my canreef friends offered to help me to make a mesh top for my tank :mrgreen: so I am going back to my original plan to get a flasher wrasse. No more tangs for me at this time.
Thanks for all your input and chiming in to help me. You guys/gals are wonderful whenever I need your help.

Hamy you should get a Mcorskers, clown, pair of leopards i love wrasses once i down grade i will have more wrasses.

Yes, that is the McCorsker wrass I am going to get, it is so beautiful but also a good jumper too.

This thread is bound to lead to a public flogging for even posting it.

If it does not, something is wrong as I have been chastised more than once.

I have a yellow in my 70 and it's happy happy.

Keep the tang smaller, and once it's size is edging on outgrowing the tank , you can rehome it or maybe trade for a smaller.

Most people are ok advising kole tangs, but most think none.

Be smart on the specimen you choose. I am sure, without reading all the posts, you will find a variety that you can keep, if anything, for a couple years.

Good luck and let us know what you decide.