This is a story about a fish called Bernard who lives in the river with his brothers and sisters. The speaker says:

"...Every day they all huddle together, all that is, except for Bernard." Come outside: Fish (1995) (see:9:30-9:35)

The expression "...all that is ...." caught my attention. From the context, I assume it means "all of them", but then if "all that" means "all of them", why is there an "is"?

I am confused, so want to ask:

1- What does "all that is" mean here?

2- Why not omit "all that is" and simply say "....they all huddle together except for Bernard."? Wouldn't this be enough to create the same meaning?

This is a story about a fish called Bernard who lives in the river with his brothers and sisters. The speaker says:

"...Every day they all huddle together, all that is, except for Bernard." Come outside: Fish (1995) (see:9:30-9:35)

The expression "...all that is ...." caught my attention. From the context, I assume it means "all of them", but then if "all that" means "all of them", why is there an "is"?

I am confused, so want to ask:

1- What function does "all that is" serve here?

2- Why not omit "all that is" and simply say "....they all huddle together except for Bernard."? Wouldn't this be enough to create the same meaning?

This is a story about a fish called Bernard who lives in the river with his brothers and sisters. The speaker says:

"...Every day they all huddle together. All that is except for Bernard." Come outside: Fish (1995) (see:9:30-9:35)

The expression "...all that is ...." caught my attention. From the context, I assume it means "all of them", but then if "all that" means "all of them", why is there an "is"?

I am confused, so want to ask:

1- What does "all that is" mean here?

2- Why not omit "all that is" and simply say "....they all huddle together except for Bernard."? Wouldn't this be enough to create the same meaning?

This is a story about a fish called Bernard who lives in the river with his brothers and sisters. The speaker says:

"...Every day they all huddle together, all that is, except for Bernard." Come outside: Fish (1995) (see:9:30-9:35)

The expression "...all that is ...." caught my attention. From the context, I assume it means "all of them", but then if "all that" means "all of them", why is there an "is"?

I am confused, so want to ask:

1- What does "all that is" mean here?

2- Why not omit "all that is" and simply say "....they all huddle together except for Bernard."? Wouldn't this be enough to create the same meaning?