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    cichlidophile liv2padl's Avatar
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    Hybrid Cichlids? Just Say No - liv2padl

    The term "Hybrid" refers to the result of mating a male of one species with a female of another species.

    Hybrids are unfortunately, quite common in the cichlid hobby. Almost any Central American cichlid will hybridize with any other. Many of the mbuna (rock dwelling cichlids from Lake Malawi) will hybridize with each other.

    Cichlid hybrids are very rare in the wild. Surprisingly, two species of fishes which together in the wild will not hybridize, will do so in an aquarium quite readily. For those who are really up on their biology, we know that many species of plants in the wild, and potentially some animals as well, are actually the result of hybridization in the wild. However, as far as we know, this has not occurred with cichlids in the wild.

    most advanced cichlid hobbyists have an active dislike for hybrids and to be honest, for the people that produce them.

    Every now and then someone produces a new "wonder" fish by hybridizing two species and they may even sell some. In the end, however, this person usually finds themselves shunned by the rest of the cichlid aquarist community and worse yet, the person gets a bad reputation even if they stop producing hybrids: their future actions are always suspect. A bad reputation is an extremely difficult thing to change.

    Why are hybrids so bad?

    On a philosophical level, many people, myself included, dislike hybrids because the creation of hybrids is a kind of arrogance on behalf of people, namely some sort of deep-rooted feeling that we as humans can improve upon nature. I feel that with 2300+ species of cichlids in the wild, we don't need to go creating yet another kind just because we can. Furthermore, the ability to create "designer" organisms has a way of cheapening the beauty and wonder of real organisms.

    In addition, on a very practical level, hybrids create enormous problems for fellow ************s, problems that may last for a long time and become intractable. Imagine you cross (make a hybrid) between two species of Central American cichlid, e.g., a convict and a texas cichlid. You know that they are hybrids and you keep them in a tank separate from other cichlids. But over time, events cause this tightly controlled situation to get out of hand.

    One of the hybrids may jump into another tank or you might sell or give away some of the hybrids and the recipient may not know or remember that the fish is in fact a hybrid. People often bring fish back to pet stores or sell them at auctions and so the hybrid nature of the fish can easily get lost along the way.

    The first generation of hybrids (called F1 hybrids) are often easy to spot; they look like a mixture of the two parent species. If two of these F1 hybrids go on to mate, or if one of them is mated to either of the parent species, the offspring (F2 hybrids) create the real problems. Why? Because F2 individuals may look like almost anything in between the two parent species, up to and including looking like either of the parent species. This is a disaster waiting to happen because it means that now you have a fish that looks like a certain species but doesn't have all the right genes for that species.

    Now imagine what happens when these offspring grow up and get back into the mainstream of the hobby. A person (potentially you) buys what looks like a convict cichlid at your local pet store. You are unaware that the fish is actually an F2 convict x texas cross brought in a week ago by someone else. The person who sold the fish to the store forgot to mention that point (we will assume they forgot accidentally, but since most reputable pet stores will not knowingly carry hybrids, some people "forget" to mention that the fish they are selling are hybrids).

    Now you put your new convict in with your other convict and for some strange reason, they never reproduce successfully. Or they do reproduce and the kids look kind of strange. Now you have a bunch more hybrids that you have to deal with.

    You have probably already witnessed this phenomenon without even knowing it. Many times in fish stores I see a tank labeled "Mixed African cichlids". What exactly does that mean? In some cases it means that the fish store had a few of this and a few of that and they put them together. More typically it means that they don't know what genes are in there. The fish are just colorful, so who cares? Well, many people care. cichlid forums constantly have questions from people who buy fish from those tanks and then try to figure out which fish they have. The sad answer is that we can never know. Just because a fish superficially looks like species X does not mean that it is that species.

    Aren't cichlid hybrids just the same phenomenon as different breeds of dogs?

    Many people do not realize that all breeds of dogs are just different forms of the same species. The situation with cichlids is completely different. The different kinds of cichlids are completely different species of animals, so crossing two species of cichlids is not like mating a German Shepherd with a poodle, it is more like mating a German Shepherd with a cat.

    Dealing with hybrids

    The solution here is simple. Destroy them immediately. If you have a difficult time killing a bunch of hybrid eggs, imagine how difficult it will be for you to kill them when they are cute little fry or even young adults. This is a responsibility you take on when you keep fish and you should take it seriously.

    Under absolutely no circumstances should you pass hybrids on to someone else unless they are to be used as feeder fish.
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  3. #3
    The glistening drop.... Rbishop's Avatar
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    Discussion for this article can be found at..

    http://www.aquariacentral.com/forums...d.php?t=156925
    Bob

    Our baggage helped define who we are. How we carry it determines our direction in life.



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