Fish do not like PE Calanus
- Thread starter K. Steven
- Start date
- Tagged users None
mckinney0171
Well-Known Member
not me. mine eat it up like candy. especially ones with little mouths.
eatbreakfast
Fish Nerd
Mine go crazy for it too.
Two dragonettes hate it and my piggy fanged blenny too.
Everyone else likes it.
Everyone else likes it.
OP
OP
K. Steven
Well-Known Member
I've fed it thawed immediately and after being stored in the fridge for a day. Neither feeding was accepted.
OP
OP
K. Steven
Well-Known Member
Yes, the oil slick on the water and it collapsing the foam head of the skimmer for a few hours is another reason I'm not a fan.
rkpetersen
walked the sand with the crustaceans
I've got some at the back of my frozen food compartment; it rarely sees the light of day; too many other foods that the fish (and corals) like more.
Philt56
Active Member
What kind of fish? My sunburst anthias eat it and haven’t gone for anything else yet, I’ve only had them a week.
mcarroll
10K Club member
That's arguably the most important part of food.....and may be the biggest reason for using calanus vs things like mysus or brine shrimp which lack correct oil content without corrective additives. (Correct pigments in calanus are good for immunity too though.)
That's all just a normal part of feeding – I definitely would not let that dictate my feeding choices.
If your foods lack oil (or even just lack the correct kind) your animal's health will suffer.
Instead of worring, look at this phenomena as positive confirmation that there are oils in your food! Healthy oils in this case!
Also it's good to remember that a skimmer's main function – aeration – is not impacted by this.
Only it's limited ability to remove skimmate to the cup is impacted, and even that's only temporary.
So, no worries!
rkpetersen
walked the sand with the crustaceans
Oil in the food is good. Fish need fatty acids in their diet. Oil as a slick on the water surface, though - That won't benefit the fish, it's just contamination. However, when you prepare the food, it's easy to decant that off, if present, before feeding.
mcarroll
10K Club member
If it's a big enough slick or otherwise lasts long enough to seem worth worrying about, I'd consider whether you might be overfeeding (maybe too much at once even if it's not too much overall) or have flow issues that are contributing to its presence. Both are common. It's not normal for a slick to stay around.
Rinsing foods isn't that great an option either, IMO. For one thing, it's one more step that you have to repeat with every feeding but which adds almost nothing beneficial. "Lack of slick" hardly counts.
Since your tank is going to be around for years I'd recommend avoiding as many "half useful" maintenance tasks as possible to keep things simple and easy. Plus if the food you're using has any additives to correct nutrients or fat ratios, you might be losing that as well. Unless you have a sterile fish-only tank, then these residues aren't going to go to waste anyway, they are going to the live rock and sand microbes (and maybe corals, if you have them), which can all potentially "communicate" the nutrients up the food chain!
Rinsing foods isn't that great an option either, IMO. For one thing, it's one more step that you have to repeat with every feeding but which adds almost nothing beneficial. "Lack of slick" hardly counts.
Since your tank is going to be around for years I'd recommend avoiding as many "half useful" maintenance tasks as possible to keep things simple and easy. Plus if the food you're using has any additives to correct nutrients or fat ratios, you might be losing that as well. Unless you have a sterile fish-only tank, then these residues aren't going to go to waste anyway, they are going to the live rock and sand microbes (and maybe corals, if you have them), which can all potentially "communicate" the nutrients up the food chain!
