How many out of my group of ten can I expect to be picked off ? Im feeding three times a day trying to prevent this, but so far one down. Down to 9....
Most people keep their bare tanks to have their shoal become more active and less skittish (i tried and it failed). It pretty much made them more skittish and less active unless it was feeding time. For pygos at a small size (mine are 3-4"), they will nip and fight all day. In order to limit the chance of cannabalism, you should always provide hiding spots from plants, driftwood, etc. This way we can decrease the chance of cannablism by limited the "line of sight". Once my shoal went into a new tank with many plants and dw, they became less skittish and more active. Even if they fight, the line of sight is limited therefore the chase is brief or temporary. But I shouldnt relate your shoal my shoal because you have caribas and i just have regular rbps. try to lower water temps and add some plants with more hiding spots. Once they become adults, they will be more comfortable with each other as well as you so might not need to hide anymore.
Strong current will also break up aggression, low lite, lower temp(75ish), clean water, bw and most importantly a varied constant diet, if I were you id take a piece of fishing line and tie a chunk of talapia or shrimp on it so they have something to nibble while your at work or gone.
I have no experience with caribe, but I do have pygos (rbp), I started with 6 and all 6 are still alive, however I gave one away awhile back. My guess would be 7-8!
Gl
Go S. Vettel #1 rb8