Volitan lion tank size question

[jimi thing]

Hello, I have a semi adult lion in a custom long tank but I'm wondering if it would be to small for him.
The tank is a 70 gallon long 82"L X 13.5"D X 14.5"H
There is also a 18" snowflake eel in the tank with him.
My original intentions were to put these guys in a 125-150g but I was wondering if this tank would be ok for a little while?
Thanks!

 

[chrisdef15]

Alright for awhile. Not great though. Really a 180 is minimum for one. And even that is pushing it in front to back width. Think of a big volitan like a 16" ball. They need plenty of room all around them because of the fins. If they are constantly rubbing on your LR and glass they get infections and fungus ect and end up falling off.