This week's Friday Fish is possibly the last of the fish species that I have owned as an aquarium pet. The convict cichlid is a native of Central America, unlike the well-studied evolutionary systems of African cichlids. I had a pair of these for a short time, but the male became hyper-aggressive and killed all the other fish in the tank, including his mate, then died of infections in his wounds. A Web of Science search just found 24 hits for this species. They seemed to be used mostly in basic behavioural ecology stuff - alarm phermones, predator response, that kind of thing. Aquarium websites describe this species as "very hardy", so they probably tolerate laboratory conditions well.
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