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RE: Strange creatures

> Jerry 
> I've seen these before and they are planarian. 
Another possible culprit are oligochaete worms. I have seen them
on numerous occasions in aquaria. They normally indicate an 
abundance of nutrients (excess feeding) when they reach 
noticeable numbers.
However, if they should turn out to be planarian flatworms I have 
known them to eat fish ova, and I have had problems with their 
mucus rendering food unappealing to fish. This has happened in 
particular while feeding chopped earthworms. In spite of this being 
one of the foods guaranteed to provoke an enthusiatic feeding 
response, once a planarian has crawled over it it will be refused by 
many cichlids.  

Pete Liptrot
Bolton Museum Aquarium
Le Mans Crescent, Bolton BL1 1SE
01204 332200

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