Ah I knew there was something I missed. But yes I have read this and also read that this contributes to hole in the head as well. Having worked at a pet store I can also add that even if these fish don't have any parasites or anything to harm your fish, they don't contain much nutrients. These fish are fed really poorly, if at all, and if you choose to buy feeders such as guppies make sure you gut load them.
As a good staple pellet, if you can get the clown to eat it, I would recommend hikari pellets. Carnivore and massivore are good ones depending on the size of your knife, my bichir sure loves them.
Spot on
LFS feeders usually are terrible. Rather than trying to jump on pellets right away, start with frozen prepared foods like beef heart and mysis shrimp. Eventually you can move to market shrimp, but they'll get the idea that an open lid means food and you can get them on pellets. I've got a 22" Clown Knife and a 15" Black Ghost Knife on pellets by slowing introducing them to non live foods. I normally would say "Starve 'em" but Knives are tricky.
clown knives get to about 3 feet long. move it out of that tank ASAP.
the BGK itself needs a 150 gallon at the very minimum, and the clown knife will need at least a 300.
unless you plan on getting tanks big enough for them soon, take them to the LFS now before they get too big and noone will take them off your hands.
CK needs 300, and a BGK needs a 150? What dimensions, and why? Also, wouldn't taking them to the fish store put them in jeopardy of falling into a less capable keeper?
Let them finish the rosys off, but just start offering blood worms and frozen beef heart on a regular schedule. I suggest feeding them once every 2 days until they take it (remove uneaten food) and once they get used to the frozen food feed them every day. Once they get used to your schedule cut the frozen foods off and start feeding pellets exclusively until they accept them. Knives really aren't too picky when they get a bit of size on them. You just have to work with them and be patient.so should i take the red rosys out of my tank now? and how should i start to teach my clown knife to accept frozen foods or pellets?