Hello,
i've heard, that polypterids (and also Channa sp.) have problems with the proteins of mammal meat - in nature there are rare opportunities to hunt mammals for these fish ...
My question: Is ther any reason to feed mammal meat (unless if it is beef or heart or anything) if there are less "risky" food - with a more natural approach ... feeder fish, fish filet, worms and insects.
Years ago i had kept snapping turtles (in Germany it's forbidden to keep them anymore - like snakeheads in the US) and soft-shell turtles with a very big appetite - i've learned what food made more dirt or less (i speak about the water quality). After several water-change-parties (a risky play if you are guitarist AND keeper of snapping turtles) i've learned my lessons quite well - and i knew what is better NOT to feed:
liver and heart, rats and mice (dead ones) and fat fish like salmo salar ...
Greetings
Uwe