BTW, th ekleaves themselves do not have much, if any nutrition to shrimps, the fungi/yeast/the other bacteria, then the critters that feed on this community are what the shrimps are really after here.
Tell you what, take a microscope.
Allow a leaf to get well colonized. (1-2 weeks)
Then scrape off some sections and see how much is there.
Then add to shrimp tank and check in 2 days. The area scraped will not have much(control), and the area not scaped will also be relatively bare. The leaf itself is not eaten.........
but will break down and rot, be shredded up but shrimp going after the smaller critters on the leaves. Sort of like a Woodpecker digging worms and tasty treats from the tree trunks, vs getting the bugs that crawl outside. Woodpeckers are not "eating the trees". They do shed them up good however. Any semi resistant organic material that can be colonized and breaks down in the tank without going too fast is fair game it seems to me.
This general idea is not focused on a single plant leaf species, such as indian almond. But whatever is locally available and colonizes well, does not have any side effects or is too messy.
Pine needles might not be that good obviously, but most hardwood leaves ought to work and folks in the tropics can use the almond leaves etc.
Your sponge filters also work for this same reason as organic matter attaches, and forms large bacterial communities which also supports large critters up the food chain.
Now how many of you have noticed how shrimp will pick and hang out of the sponge filters and things that are furry like moss?
They show definite preference.
Using this and shrimp counts per leaf cutting(cut leaf all the same sizes), you can test which leaves are best for your shrimp even if you wanted to based on shrimp selection of feeding substrates.
Now you are testing and getting somewhere.
Look, this is not hard stuff that researchers are only capable of here.
Then you can do other things like pre soak the leaves for 1-2-5-7-14 days time frames and look at how the time of presoak influences the shrimp.
This way you can feed live foods and raise the food simply by placing some leaves every few days in water in a small tray.
You folks can learn a lot more than arguing about Phenolic contents and chemicals that may or may not be in the leaves and which are better.
Stop that and test the leaves to see.
Then you will have a more knowledge, understanding ability to answer your own questions much better.
You really ,do not care about the chemicals, you care about the shrimp.
So focus on them:thumbsup:
Let them chose.