Yeah, I mentioned fat content in worms earlier & that's why I'm not a big advocate of using worms that often. I think they're great for new fish that won't eat.........your packing a load of protein into a small package short term till you get them eating more proper foods. The fat isn't going to matter for that short period of time. They'd also be good for sick fish that haven't eaten in a while or fish that are woefully thin.
I think they have merit for conditioning breeders, again, short term.
I'd also be more apt to feed the worms to Butterfly fish on a more regular basis as marine worms are part of their natural diet.
I'm intrigued on what affect they would have on LPS corals as far as accelerating growth.
Interesting chart. Thank you for posting it. What it does not tell you is the types of fat.
Worms and fish, including goldfish have no solid fat, only oil, and all oils are not the same. The fat in a mouse is not suitable for a fish food nor is the oil in a goldfish suitable for a salt water fish.
We know even in us humans all fats are not the same. Salt water fish oil is good for our hearts, brains and overall immune system health. (I take it every day) Mammal fat like we would get from cows, pigs and mice for anyone who would like to eat one is not good for us.
Fish should not eat any solid fats from land animals because at the temperatures that our fish live, that fat remains solid and can not be dijested. Fish are cold blooded and those fats remain solid at the 78 degrees (aprox) that our fish have for an internal temperature.
We can eat solid fats because our temp is 96 degrees and the fat melts. That is also why it can travel around in our blood and again solidify in our arteries.
Oil does not do that.
But worms have the type of oils that will keep both salt water and fresh water animals healthy.
It is a large part of my fishes diet and my fish normally live long enough to die from old age while spawning for many of those years. I am quite sure there is no longer study for worms as food than that.
This idea really interests me, and is really the main reason I feed LBW. So often I see CBB, for example (even ones that have been in captivity for "years") with sort of squared off bellies... I always though it looked strange, for their bellies to not be rounded and full looking. Maybe they aren't getting enough fat from shrimp, seeing as they are obviously designed to eat worms. Just throwing some thoughts out there...discuss
Could be........my Muelleri has a rounded belly & I feed raw frozen scallop, shrimp, & clam about 95% of the time for 7 years.
The thing I notice more is a butterfly can have a full round belly & body but over the years they get that slight concave look in the head above the eyes.........some sort of nutritional deficiency. I saw it in a couple of my semis. I fed them more of the commercial frozen foods like Formula 1 & 2 back then.
Ever consider that, since you are culturing them yourself,
They are so fatty and so bad for fish,
I think a lot of this is fish specific & should be used accordingly.
I'd love to know the last time someone lost a butterfly fish in captivity due to obesity or fatty liver. Furthermore, last time I checked, there were no fatty freshwater PE mysis floating around the reef either, yet I think I'd be hard pressed to find someone that doesn't recommend them.
I see your point. However, the aspect of worms as a long term diet for marine fish does not really make sense if you are in any way trying to mimic the foods these fish normally feed on in nature. Additionally, as pointed out, I am not aware of any studies finding a causal association between black worms, or any worms for that matter, on the temporal health of a fish. But if a study were to be done, it is most likely going to show that those fish fed a diet more consistent with their natural diet in the wild fare better long term as compared to those fed a black worm diet. This would assume all other factors remain consistent for both fish.
My fish love blackworms, it is like drugs to them. That however does not mean we should feed them to our fish. Most humans live french fries. But they are not goof for us![]()
I have been diving since the early 70s and many times watched butterflies pull worms out of rocks. It is their main diet, especialy copperbands and long nosed butterflies. So if you think worms are bad, don't feed them
I never claimed worms should be "a long term diet". They are just part of a varied, well rounded diet.
My 17 year old tang doesn't eat nori, but that doesn't mean I'm going to recommend that people don't feed tangs nori.
I'm not sure what old fish you have Paul, but clownfish & gobies live 15-20 years on any kind of food & they are the most readily spawned fish by novices & hobbyists.