First off, no that is not a proper analogy.
Dogs are all of the species canis familiaris. A mutt is a mixed breed.
Cichlids are species, and a hybrid is a combination of two or more species.
It would be like breeding a dog with a coyote.
Next, it does not strengthen them genetically, and typically wild caught or first generation captive bred are going to have much stronger genetics than an extremely line bred fish.
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