GuestQ, thanks so much for the brief hx and the etymology of the fish's name!

MTed, I'd love it if you'd email me an MP3 of the original "Little Grass Shack..." song!
Mark, interestingly, I use different chords than those posted in the thread, and I play it in C, with only C, C7, G, G(7), A7, F, D,D7,and E7 (not in that order), and it sounds fine to me.
I'll have to listen to the original and see (hear) if they're doing something substantially different.

The chords Gene posted, transposed to the key of C, would be:
MY LITTLE GRASS SHACK IN KEALAKEKUA, HAWAII
© 1933 Bill Cogswell, Tommy Harrison, and Johnny Noble

I want to go [C]back to my little grass shack
In Kealake[A7]kua, Ha[D7]wai'i.
I [Cdim]want to [G7]be with all the kanes and wahines
that I knew long a[C]go. [E7][Am][C]
I can [E7]hear old guitars a-playing
On the [A7]beach at Ho-onaunau.*
I can [D7]hear those Hawaiians saying,
"Komo [G7]mai no ka ua i ka hale wela ka hau."
It won't be [C]long 'til my ship will be sailing [A7]back to [D7]Kona,
A [G7]grand old place that's always fair to [E7]see!
I'm [A7]just a little Hawaiian and a homesick island boy.
I [D7]want to go back to my fish and [Cdim]poi.
I want to go [C]back to my little grass shack
In Kealake[A7]kua, Ha[D7]wai'i
Where the [G7]Humuhumunukunukuapua'a goes swimming [C]by
Where the [F7]Humuhumunukunukuapua'a goes swimming [Bb]by([Bbdim][F7])