Fish do not like PE Calanus

[K. Steven]

Anyone's fish not like PE Calanus? My fish hate the stuff. I only use it to feed corals now.

 

[mckinney0171]

not me. mine eat it up like candy. especially ones with little mouths.

 

[eatbreakfast]

Mine go crazy for it too.

 

[THX1138CY]

Mine go nuts for it, as do all of my shrimp, never thought I would find a food that would bring the peppermints out with the lights on to swim for the food.

 

[dede]

Mine eat it also with no problems.

 

[DSC reef]

Anyone's fish not like PE Calanus? My fish hate the stuff. I only use it to feed corals now.

Any chance it thawed and was refrozen?

 

[saltyfilmfolks]

Two dragonettes hate it and my piggy fanged blenny too.
Everyone else likes it.

 

[Reefltx]

Anyone's fish not like PE Calanus? My fish hate the stuff. I only use it to feed corals now.

Same, they eat some but they don’t go crazy for it like brine/mysis. I’ve stopped using it, there’s a lot of oil in it as well.

 

[K. Steven]

Any chance it thawed and was refrozen?

I've fed it thawed immediately and after being stored in the fridge for a day. Neither feeding was accepted.

 

[K. Steven]

Same, they eat some but they don’t go crazy for it like brine/mysis. I’ve stopped using it, there’s a lot of oil in it as well.

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.

 

[BryGun]

Mine don't like it. I think it's because they are spoiled with LRS NRF.

 

[BigJohnny]

None of my fish like it either, also spoiled with lrs/live blackworms/nutramar ova

 

[BryGun]

The only thing that ate it for me was a yellow finger leather gorgonian. Sexy shrimp keep those(YFL) clean by the way.

 

[rkpetersen]

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.

 

[K. Steven]

I'm glad I'm not alone. I also feed LRS Nano, so they may just be used to being served surf and turf.

 

[Philt56]

Anyone's fish not like PE Calanus? My fish hate the stuff. I only use it to feed corals now.

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]

there’s a lot of oil in it as well.

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.)

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.

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]

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]

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!

 

[squampton]

None of my saltwater fish like it. My freshwater shrimp love it though as do my bettas.