Great fish. Hardy and tolerant. They spawn very easily if provided with a cave (usually a turned over flower pot will do), as they are cave breeders. They tend very well to their young and it is this that turns them into little terrorists in a community tank setup. I found that if you want to keep kribs in a community tank setup, it is wise to have a tank of at least 200 liters or larger in volume. Otherwise it is good to put them together with other west african cichlids. The young are hardy and grow quite fast. Overall it is the little beauty of the west african cichlids.
I have a pair of Kribs, they've bred four times in my community tank. The parents protect the brood even from plecos. They even breed in a cave that was about the size of the female, I don't know how she turned upside down in there.
I got a pair of Kribs after being very impressed with a breeding pair at the local pet store. I managed to get two of the offspring while they were about two months old. They turned out to be male and female and when they reached sexual maturity rewarded me with a brood of about 30 fry. All I did was place a new overturned flower pot in the tank with them and they did all the rest. The parents seem to tollerate the older fry well enough, although I am going to remove the fry before they become adults. On the whole I think they are a great fish, very active and inquisitive, colourful and quite peaceful (a little bit agressive when breeding). I currently have them in a 95 L well planted tank with 9 Cardinal Tetras; so far so good.
I bought 2 of these fish, male and female. They started to nip the fins off my other fish so I bought them their own 65 liter tank. Soon enough I had a shoal of fry. The female ripped all the fins off my male, poor thing. He is still recovering, his fins have not grown back yet.
I've been happily breeding and giving Kribs to friends for the past eight years, and they've always gotten along with fish in community tanks (mostly various tetras, mollies, guppies, rams, and miniature angels). The only time I find mine get aggressive is when they're protecting their young, and even then their antics seem more showy than real aggression (then again, I don't have many baby-eating fish in my krib tanks). I bring in a new wild caught male every few generations (once a year), as I find that the colourations that I like tend to be hereditary on the female side - and I don't want them to get too inbred. The wild caught ones tend to be a lot more aggressive than second or third generation ones. I usually remove any baby or juvenile males, and give them away. The females either go into my "big fun family of kribs" tank (see below), or get given away too. A typical brood is about 20 babies (as of when I notice them), and about 75% make it to the age when they leave their parent's protection. I have three tanks with kribs: A 270 liter with two males and four females that has a plethora of cardinals, rummy nose, four blue rams, four golden rams, thee flying foxes, and a pleco. I use this tank to make sure that the males and females of whom I specifically want to keep the offspring end up mating. A 170 liter with 10-12 females (depending on how easy the new broods are to catch), two males, two angels, and a pleco. This tank is my "big fun family of kribs" tank. Every once in a while one comes along (grows up) with the exact colouration I want. I then move him/her (usually a her) to one of the other tanks to breed. A 125 liter heavily planted tank (java ferns and java moss) with two males, 4-5 females, and some juveniles, along with three flying foxes (the tank is near a window and tends to have a lot of algae growth), a few cardinals, and rummy nose.
I have a male and female Kribensis, they are very lovely fish to keep. I first got some of these fish about four years ago (I'm 12 now) and have been trying to breed them ever since. The problem is they always eat their eggs. I have only recently started to seriously breed fish. I am fascinated with this hobby, and especially these fish. They are a good community fish.