Killer reidi

[Fredfish]

Yet another interesting and difficult to resolve discussion around seahorses.

Mollies are not exactly fresh water fish. I have seen a reference in a published paper suggesting that brackish water species have a nutritional profile closer to their marine cousings.

Comparing shrimp and fish is also not a good thing as, in general, they have different nutritional profiles (though I could not produce evidence if pressed right now).

the mysis that PE produce are fresh water, but have much higher huffas than other freshwater shrimp and have a similar profile to their saltwater cousins. Again, can't prove it directly as PE has removed the profiles from their website.

I suspect that genetics and relatedness is as important as what type of water they come from.

I also wonder why it is that we worry about horses and live saltwater foods when I have never run into these same worries about other saltwater fish. Perhaps we as a group care more about our charges.

This seahorse thing is like a pandoras box...

Fred

 

[sloshesv]

I've never heard that about the feeder fish, but they only get that about once a month. They do get FW ghost shrimp about twice per week, again when I'm feeding the leaf fish.

 

[TamiW]

<a href=showthread.php?s=&postid=8625446#post8625446 target=_blank>Originally posted</a> by Fredfish


Mollies are not exactly fresh water fish.

Considering the mollies I have right now I caught directly from the ocean, I'd say that's an understatement. :lol:

I think what's more important is what they eat long term before they're fed. I'm not talking gut loading, but making sure they're feed the types of food that contains hufas so they themselves incorporate them into their body mass.

In the cases where seahorses are fed exclusively freshwater ghost shrimp, I have to wonder if they pick off the occasional naturally occurring isopod or amphipod and that's enough to fill out their nutritional needs. Just a wild guess though.

 

[sloshesv]

It's ghost shrimp night!!! They practically jump out of the water when they seem me coming with them.

 

[Fredfish]

... but making sure they're feed the types of food that contains hufas so they themselves incorporate them into their body mass.

Though this seems logical, it does not work this way. In fact, some folks in Hawaii raising cb Bangai tried this out to see if it would affect the nutritional composition of the feeder fish, it made absolutely no difference.

For whaterver reason, salt water critters such as shrimp have higher levels of huffas. I believe that this is usually dependant on their diet though. Pen raised salmon have very low levels of huffas compared to their wild cousins because there is none in their diet. Some crustations, like harpacticoid copepods, have the ability to synthesize their own huffas from shorter chain fatty acids.

Fred

 

[TamiW]

Interesting. Does it make any difference at all? Does feeding marine foodstuffs to a freshwater organism help at all?

 

[sloshesv]

<a href=showthread.php?s=&postid=8643387#post8643387 target=_blank>Originally posted</a> by sloshesv
It's ghost shrimp night!!! They practically jump out of the water when they seem me coming with them.

Everybody had a great time! (Read the society page to hear all about it!) Today they will have some Selcon soaked mysis.

 

[Fredfish]

Tami. Given that we all need huffas to some degree, it probably makes for very healthy feeder fish.

Whether or not huffas help form other compounds that are in themselves needed, I do not know.

There is an awful lot about fish nutrition I need to learn.

Fred

 

[Jillyfish]

Most captive bred seahorses are fed PE Mysis shrimp aside from dwarves, and these shrimp are freshwater.

 

[Fredfish]

Jillyfish. True. For whatever reason, Mysis reticulata (sp?) are naturally high in huffas. They have a similar ability to their saltwater cousins to accumulate huffas.

As I mentioned earlier its is probably not a good thing to be comparing fish such as mollies to shrimp

Fred