Tropical Fish Keeping - Aquarium fish care and resources

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AnthonyR1 04-02-2011 09:18 AM

Murderous Demasoni
well...have been away working for nearly a year and returned to an extremely "lean" tank. My girlfriend reported that my little demasoni cichlid is quite the murderer! i had issues before trying to introduce other species into the tank with this cichlid but nothing like this.

no need to get into the total body count (sad numbers) but i'm basically down to a clown catfish, a yoyo loach and of course the culprit. the loach is pretty much finless as the demasoni keeps nipping at him.

so other than getting a smaller tank (cell) for the cichlid what species can i safely introduce?

PS. have named the demasoni "Charles" as in Manson

Byron 04-02-2011 11:50 AM

This species, Pseudotropheus demasoni, is a rift lake cichlid endemic to Lake Malawi. Fish other than certain rift lake cichlids should not be housed with it, and this applies to all the rift lake fish. The only exceptions I have ever seen are some catfish species. But nothing else.

Being aggressive, this species should have a group of at least 12 fish to spread it out. Kept singly, it has probably heightened its aggression, taken out on the other fish obviously. Science now knows this to occur; "shoaling" fish, those that occur in large grops, often become even more aggressive when kept alone or in a couple fish.

Asixe from the above, the water parameters for rift lake fish basically exclude other fish. The hard and alkaline water needed for mbuna does not suit soft water fish like loaches.

As this is a specific fish, I will provide you with a link to some info from a trustworthy cichlid site:
Pseudotropheus demasoni


amberjade 04-02-2011 06:46 PM

Byron is right - they should be kept in a species tank of at least 12 - and they have to all go in at once.
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AnthonyR1 04-02-2011 08:59 PM

well thanks guys but that not gonna happen and obviously the "all at once" is a forgone conclusion.

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