Dems is the vote again. I have kept Cobalts, Maingano and Dems... Cobalts the male is a vibrant powder blue, the females are a darker blue color, almost purple. They are a little drab. The male is nice looking, but not stunning in my opinion. They also get really large. Mine was at 6'' and he was a linebacker, lol...
Maingano. They are the devil. I have kept them twice and both times were utter failures. I had a male go beserk and he had to be pulled. The 2nd time, I got a group from a well known breeder in texas and these guys were even worse. Terrorized the whole tank. I tried to make it work cause I love the colors, but I had to get rid of them for a more peaceful tank...
Dems. I have kept them for around 2 years. When I 1st got them, they didnt have the full dark coloration, looked more like kenyi, but over time, as they matured and became comfy, their colors became amazing. They breed like rabbits. Only issue I had was in the beginning when a pecking order was being established. I lost 3. As they got older, I pulled a sub dom male here and there. I got down to 1 male and 6 females by choice of pulling the sub doms. I added 11 juvies I grew up and they are all happy... The color on them is amazing, u can have a lot of them in the tank, so it means a lot of movement, which is very pleasing to the eye. They RARELY have any squabbles with other species. Their aggression is only to themselves. But, it really depends on the male. U just have to be watchful for a little while and be wary of too much aggression... Everyone sayd 12-15 dems. This number is great for juvies. As they grow up, I found that removing sub doms made things even easier. The females and males colors are interchangeable. they are both awesome. the dom male will almost glow....
I say dems, their rep isnt warranted if u keep a watch on them. Maingano are MUCH worse in my opinion. The cobalts are too drab