Cichlids are such a huge group that saying any single thing about them all is likely to be wrong! Some cichlids do dig. The African cichlid group known as "mbuna" or "rock fish" are pretty common diggers when they spawn. But then there are also the open water African cichlids who do very little digging. One that I keep is the large Protomelas type called insignus that only come down to the bottom to attract a female and just clears the spot of debris without really digging. We sometimes get too involved with the simple idea that a group of fish do a single action, when we really need to look much closer at them as individual species or single fish. Kind of like saying dogs bite and cats scratch! Some are more prone to it than others and I certainly don't want to give anybody the idea that cichlids do any one special action as they do come in everything from angelfish to Oscars and can be as meek and mild as rainbow cichlids or as mean as Malawi eyebiters! We just have to do a better job of sorting out the good from the bad, whether it is a fish or a human.
One of the things that attracts me to the cichlid group is the varied actions when they breed. I can't imagine anything more dedicated than a female fish who holds the eggs in her mouth and avoids eating them for as long as a month! Most advanced thinking parents would do almost anything to save their kids but I'm not real sure I could go as far as my fish!!
I see Immortal's post and want to respond. I do not mean that it is always a problem but something that very much depends on the heater and how it is designed as well as placed. Just a general idea that since the controls on many of the common heaters are located in the top and heat does tend to flow up, many are designed and do work better if they are located so the heat inside the tube does flow up to allow the controls to sense that heat quicker/better. With many different heaters and designs, I should not make any statements that they all do the same. Just like my fish and human example, we need to do a good job of sorting them out?
Last edited by PlantedRich; 06-23-2018 at 01:27 AM.