January 8, 2012
for several months now i have had a tank with some mbuna cichlids in it. i origianally had 10. 2 died the day i got them and 1 died a month later from a fight with the dominant male. since then two more have died. the tank is a 150 liter with a gravel substrate,none of them have a fungus on their scales, there is a slight rise in ammonia but everything appears alright, does anyone knnow what could be going on? any advice would be helpful.
It helps if you can say what kind of mbuna you have. They differ a lot in aggression and some can be extremely aggressive.
More importantly, a 150 liter aquarium is far to small for mbuna. All mbuna are territorial to a degree, but few will do well in a 150 liter. While it is good to stock mbuna a little on the high side to disperse aggression, keeping 10 in a 150 liter is to crowded. I wouldn't keep mbuna in a tank under 4 feet in length. They simply need space for their territories as well as space to evade attacks from the tank mates. You'd also need a pretty strict water changing schedule with a tank stocked at that density.
What are you feeding them? Almost all the species are herbivores and while some can handle a fair bit of protein in their diet, a fair number of species are very sensitive.
Any other info you have on the tank, like tank lay out would help in trying to figure out what's going on in your tank to.
January 8, 2012
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