I would suggest putting the anchovies into a blender and making a powder out of it. This will allow it to break down quicker and be accessable to the plant sooner. And as stated above the seeds don't need ferts for the first week or two after germination.

Also you should start a compost pile out side, just start adding leaves, small twigs and all your kitchen scraps except for meat to the pile. before you add anything make sure you cut it up small so it decomposes quicker. when the pile gets bigger around 3 cu. ft. or so start to turn it every few days or once a week. You could have high quality compost in a month or two.

Organic fish and blood fertalizers do smell, but you can still use them in indoors grows. Usually Bat guano is a good choice for organic indoor fertalization.