Thanks guys.
It is a seahorse. I have a couple more, a crab and an octopus, just haven't got them on yet.
I had some issues with the return pump. I bought a Jebao but when I installed it then stuck my hand in the water I got a sizable zap. It was the only thing in the sump at the time. I quickly ordered a Sicce pump from BRS and returned the other to Amazon.