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Nadine
Age: 42
Joined: 23 Jan 2006
Posts: 26
Location: Germany
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Crossbreeding problem with freshwater shrimps
A large topic in shrimpkeeping is which species crossbreed and which don't.
Even shrimp experts have to revise their opinion as new scientific information keeps turning up.
A difficulty is the large number of different species, some of which look quite similar. A large portion of these species hasn't been described scientifically for certain and constantly new species are imported.
Since many species are unknown, their naming is completely arbitrary. The shrimp get any fantasy names such as zebra shrimp, algae shrimp or something like that.
The latin designations are usually omitted completely.
This is the reason why frequently two shrimp owners talk about a kind of shrimp, but each has a different species.
In my opinion it would be the wrong way to introduce a system of numbers for better understanding similarly to the L-Catfish. A retailer that can't differentiate between bee shrimp and tiger shrimp will also have no knowledge of the numbers. The ideal case would be if all shrimps were scientifically described before they enter the retail trade. This will be, however, probably not be realizable. The minimum that should be achieved, however, is a uniform german/english designation based on the optical appearance. That is still not ideal, but it would be a clear improvement of the status quo.
Besides the fact that there are afaik no unmistakeable descriptions things are made more complicated by the possibility of crossbreeding among the different species.
Unfortunately there are probably nearly identical-looking animals that belong to different kinds nevertheless.
An example for this would be the pit shrimp. An animal examined by Andreas Karge shows a complete unserrated rostrum. There are also other characteristics that underly his opinion clearly that this shrimp does not belong to Serrata Group. Pit shrimps examined by Werner Klotz exhibited, on the other hand, clear signs for an affiliation to the Serrata Group.
In my opinion the blue pit shrimp examined by myself belongs also to the Serrata Group .
Such problems make a statement about possible crossingbreeding more difficult. The animals examined by Andreas Karge would probably not cross with other shrimps of the Serrata Group, the pit shrimps of Werner Klotz and my blue ones would do it with high probability.
Therefore any crossbreeding tables show a probability prognosis at best and correspond in each case to the level of knowledge of the respective author.
Nevertheless some tables are quite useful as reference points and are applicable under normal conditions, there is, however, no such thing as a 100-%-certainty.
German version written by Christian http://www.garnele-online.de/1088506.htm |
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