Good for the heart, eyes, skin, brain & helps reduce inflammation.
I've shared this before but sharing again.

It's stinky but they love it!
DSCN5202.JPG They're about 3" long.
Got mine from Trader Joe's, make sure it's unsalted, packed in spring water (not olive oil). They eat the soft bones & everything.
They share 1 & I freeze the rest. I give it to them as a weekly treat before bath time. I use chopsticks to feed them LOL.
Not all dogs can tolerate fish, so if starting out, give a tiny piece to see how they do.