i am new to the world of polypteridae. about 6 mths ago i bought my first one, an endi and it was all down hill. now armed with a new tank and many polys later, i am always learning new things about them. i have read and spoke to many experts in the field of poly, and with the many opinions, i weaved thru some and finds what works for me and my polys keeping. one important thing i learn is feeding, food type. As many here i use massivore pellets, some others advice against pellets, so i also use tilapia steaks (chopped), frozen brine shrimps. i recently came across some frozen whole sardines next to the tilapia steak area. bought it and tried it, man it is a hit beyond believe! they love it, ,my Senegal today dove into the pile and came out with what looks like 2 cigarettes. he was eating 2 at a time. i know there are many opinions about feeding land animal to fish, but is it wrong (downside) to feed saltwater fish to freshwater fish? the sardines are cheap too (2.99 for a 4"x6"x1" block), bonus if it works. i still mixed it up to keep the variety.