Vegan /vegetarian fish food

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In the name of science and research on this topic, Nutrient Requirements of Fish (1993) is pretty much the bible on this subject, well worth a read for anyone interested. For most of the tropical species one has to extrapolate the info from commercial herbivores/omnivores/carnivores, to tropical species kept in the hobby, but most of that research is a valuable place to begin. Vitamins is not an issue, but that is not saying that certain enzymes and other nutrients are not lost along the way, once a raw ingredient is processed. Of course most of the tropical species of fish have never been studied long enough (if at all) for any real conclusions to be made one way or the other, as far as assimilation, digestible energy, bioavailability, etc.

A read of the numerous studies and papers found in the book above will explain why certain species are classified in the manner that they are, and go into detail regarding amino acid profiles found in various protein sources, as well as fatty acid profiles, vitamins, trace minerals, etc. Even most fish classified as herbivores, frugivores, etc, consume aquatic based sources of protein and fat. Mother Nature seldom gets this wrong.

Good luck.
 
Obligatory devils advocate post, i always gotta be that guy:

I think we need some further explanation from the OP before we go any further here. Perhaps they intend to feed the fish a "vegan" pellet to fulfill the fish's vegetarian dietary requirements, then use other means to satisfy their protein requirements like live, frozen, etc. Or perhaps OP wants to try this vegetarian regimen at specific intervals for whatever reason, like a temporary diet or something. Its well known that fishes diets can change radically depending on season, locality, etc...maybe even fully vegetarian at some times???

How bout it S Savethemall , if youre doing research go ahead and give us an abstract of what youre doing and hope to accomplish?
 
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Is the above emoji to symbolise you're watching with eager anticipation of what's coming next....or....are you offering the OP some suggestions on what to feed their fish!! Lol.

It's supposed to be me...eating popcorn shrimp! :devil:
 
It's supposed to be me...eating popcorn shrimp! :devil:

I once knew a guy who virtually lived off popcorn kernals right up to his death! That made for a rather interesting cremation I can tell you!

I didn't know whether it was a funeral or New Year's Eve!
 
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I once knew a guy who virtually lived off popcorn kernals right up to his death! That made for a rather interesting cremation I can tell you!

I didn't know whether it was a funeral or New Year's Eve!
You could live off anything till you die - the question is how long you live.
I can go the rest of my life without breathing, but you wouldn’t hear much from me after 3 minutes or so…
 
The problem with the whole situation is you think your doing them a favor while in reality they'd be better off left alone. I've known people who run animal rescues too and most the time their catching cereal cats that could live happy lives left to run in the field and woods, then surgically sterilizing them and crannibg them in stinking crates and trying to guilt people like you into saving them. It's one thing to remove animals from unfit homes and free them, an entirely different thing to push your political and ethical agendas on them while depriving them of the staples of their natural existence. I'm not against captive animals, I've got my own pets but i try to give them a s much of their natural lives as i can offer.
 
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