I'm surprised about the 3/16 pellets, but yes, I found several online stores that promote 45%. If you do go with Triton, please take a picture of the tag. With various Triton fish food bags Newalla is showing protein only, protein and fat, or no protein and fat at all.
The only LMB that I have eating pellets are those that were trained prior to my purchase. I'm not sure, but I think they're Northern/Florida mix that came from OK.