reptileguy2727 said:
.... For general fishkeeping purposes there is no need for any live food if the fish will take prepared.
Depends on what 'general fishkeeping purposes' means to you.
This person was asking about max growth and my experience with SA cichlids (30 years of keeping and breeding) has led me to my conclusions. I've done it both ways (prepared and fresh/live) and I get better growth/spawning with live/fresh (combo really, I never feed just live).
Most cichlids will do fine on prepared food. I'm not saying that you're doing your fish wrong by using prepared food. But if you've ever worked with fish that are tough to get to spawn and you give them live food and everything starts to click, it makes you a believer. When you see fish that have been fed live food outgrow ones on prepared, that made me a believer too. This person was asking about maximizing growth.
Most of the best discus keepers will feed live blackworms, ground up fresh shrimp and beefheart (all of these are fresh/live) and discus are some of the most sensitive fish that there are when it comes to diseases! Those of us that rear newly hatched fish (also sensitive) rely on live baby brine shrimp, live microworms and live vinegar eels. My fry survival rates would be next to nothing if I had to rely on prepared foods for them.
I get no diseases from the live foods that I use. I don't collect from streams or lakes and my earthworms come from organic compost. If live foods are dangerous, I should have diseases all of the time, and the fact is, I don't get them at all (unless it's from a new fish with an existing condition).
respectfully,
windsurfer....