Blue Hippo Tang

I think that 40 is to small even for a short time. While the fish is still small within a year or to it could easily outgrow the tank ending up about 6-7". And upgrades are always 'situational' until you have them so many things could happen to prevent it. My personal opinion is to wait until you have the other tank.

I bought a baby hippo tang {she was the size of a dime} for my 135 gallon tank and in all honesty she has more than doubled in size in the 5 months or so that she has been in the tank..They grow alot quicker than you would think they would.A baby hippo can easily out grow the tank in a year or less.

I agree with every body here you never know when you make that change, and a hippo tang will out grow a 40 gal in no time at all.

Well isnt the growth of the fish proportional to the size of the tank? If you have a 40g tank the fish will grow alot slower than if you have a 180g tank, alot less room to grow. Is this true or no.

benvardag said:

Well isnt the growth of the fish proportional to the size of the tank? If you have a 40g tank the fish will grow alot slower than if you have a 180g tank, alot less room to grow. Is this true or no.

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This is true, but not what you want to do. It's like keeping a 5 year old kid in a crib to slow the kids growth.

Iit will eventually cause the fish undo stress as it will not be able to swim around as it would normally do.

Tangs in particular are constantly swimming around in the open areas of the tank, "stretching their fins" per say. In my 100 gallon, my Hippo is constantly racing across the tank in the front as if she is in some sort of race or something.

Maybe not the best cliche or example in the book, but you get the idea.

Also they are very fast swimmers and need the room to swim, mine is now in the 180 gal and I can see a big difference how he acts and swims. They are stunning fish and a great pet, mine eats out of my hand.