Squid sashimi is my favorite food.
Look in the sea and you'll see what looks like a crow moving under the water and it's a thief! It's stealing from all the fish. As it comes closer you see that it isn't a crow, it's a squid. Or a cuttlefish? One or the other.
The reading for this word is an exception. I'd give you a mnemonic to remember it but it looks like the mnemonic for いか is いか! If you've been paying attention, you know this is squid already!