chalk bass question

[Whatigot]

I have a little school of 5, all added simultaneously about 7 months ago and no jumpers yet.
I also have very little else in my tank, so no reason for them to stress, but I find that the more places to hide like caves and overhangs and stuff, the happier they are.

I added another chalk bass, tinier by far than any of the others because I felt sorry for him all alone at aquatic addictions who has them for 14.99 ( I paid 22.45 each for mine at JL) so on total impulse i brought her home...
That one didn't make it, no idea if it jumped or was simply not accepted into the community by the established group but it didn't last 48 hours (it was slightly emaciated and obviously stressed when I bought it)...


Best bet would be to rescape a bit to confuse the chalkie in your tank into thinking its in a new tank and on equal footing (finning?) with the new one(s) you add at the time of the rescape.