There were a couple of requests at Aquatika to share my shrimp mix recipe on the forum, so here it is. I did not invent it, it has been around for ages in the hobby under various guises, most recently as the "European shrimp mix" I feed it to all my fish, from barbs to plecos to assorted cichlids to discus.
Small shrimp, head removed – 500 g
Frozen green peas – 250 g
Red capsicum – 1 large
Ripe robusta banana – 1 large
Cauliflower, beans, courgettes - ~50 grams
Garlic – 2-3 cloves, peeled
Spirulina powder - ¼ teaspoon
Blend all ingredients to a fine paste without adding any water. Spread on cookie tray, freeze, cut into 1" cubes and store in the freezer in ziploc bags or food grade plastic boxes.
I use small shrimp because that is readily available here, you can use jumbo shrimp if you want (I used tiger prawns at one point). I leave some part of the shell on to provide calcium and other nutrients. You can use fresh squid, mussels, clams or white fish instead of or in addition to the shrimp, just make sure they are really fresh. I don't feed anything to the fish I wouldn't eat myself.
You can add some multivitamins or calcium as a supplement, but it is not essential. If you have access to fresh cod liver oil, one or two capsules per kg of mix is helpful.
The banana acts as a binder in this mix, if you want, you can omit it and use gelatin instead. I find 30g of gelatin is good for binding 1kg of mix.
Adding more spirulina does not hurt, it makes the mix smell weird, though.
You can try other vegetables or fruit if you want, try it on a small batch first to see if your fish will eat it. My fish do not like carrots, beetroot or guava. Ripe papayas and bottle gourds are eaten. YMMV.
If you want to feed mainly herbivorous fish, like mbuna or tropheus, reduce the animal protein to ~30% and increase veggies accordingly.
If shrimp is very expensive where you live, you can replace it with whatever cheap protein is available, like beef heart.
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