I feed fresh mussels (when i remember to get some, do get funny looks asking for 6 mussells though), also prawn occassionally, terta prima regularly, bloodworm and bloodworm pellets
something I remembered, when feeding fry ie zebra fry bloodworms or similar, it is probably a good idea to chop them smaller, there have been on occassion incidences where young plecs have choked on them.