Tangs in a 60 gallon tank could be acceptable

[rygh]

A big thing people are ignoring is pollution. Big tangs eat a lot of food, and have a fairly inefficient digestive system. While they are herbivores, they do eat meaty foods
that are intended for other fish.
A small tank system may really struggle to handle the bio-load.
While you can solve that, it gets tricky, especially as you try to grow finicky coral as well.

 

[PjFish]

Not all tangs swim the same amount or speed. Achilles and yellow Nate nowhere near the same in ocean behavior.

Totally what I was thinking when watching the video. Watching five of my tangs grow as they grew from small, medium to large they all have a different swim style unless their chasing down food in a frenzy pack! Plus observing many tangs in past systems.. They all take their time hovering picking at rocks swimming and picking. At times playing in the current doing loops. I do have space behind the rocks which they cruise and forage.. From the videos perspective my take he’s comparing tangs to anchovies which constantly swim in circles when dumped into a tank/ live well etc. Plus I think larger wrasses have them beat by a long shot that never stop weaving and cruising. Maybe a Wrasse Police group is in order ha. .I don’t agree rocks in the center is increasing more looping swimming distance but more importantly it increases square footage of algae grazing areas on the back sides for the fish. If no rocks or only rocks six to a foot high gota add a few more fish laps/ lanes to the theory at least two more lanes down the center of tank so four more 16ft? Now thinking of a swim meet! Hard to compare bio loads from tanks to tank sizes since people are on different routines water changes every three days, seven,14 or whatever it takes or needs on a regular basis to keep parameters in check. Hopefully I didn’t stray too far!!

 

[PjFish]

You already know my answer lol

Only flaw I would say is the tang size needs to be factored in to account for available linear swim path. For example a 20”+ Dussumieri tang in a 60”x24” tank would be too small of a tank. It would barely have any room to turn around.

Like many freshies recommend an 180-250 gallon tank for an 24 inch arowana! Which is ridiculous also