Sense Sonnet - Pumper

Arapaima

An arapaima, I am
A big fish in the Amazon.
Up and down and across I've swam.
I'm a fine finned phenomenon.
My swim bladder hybrids with gill.
There is some lung stuff growing there.
So while waters my preferred, still
I have to come up for some air.
Though fish is main catch of the day,
This fish outta water does find
My rough boned tongue leading the way
For a snack of the feathered kind.

Some like to fish for fish, I've heard.
But my fav is to fish for bird.