View Full Version : Excessive pleopods fanning = slow death ?

21st Jun 2013, 05:00 PM
Hi guys,

I'm keeping CRS and RCS shrimps for the last 4 years. Managed to grow couple batches of the newborns, but in general I have pretty bad luck.
I'm trying different setups, combinations and maintenance routines but usually end up loosing all shrimps in 4-6 months.

Over these years I have noticed one strange "pattern": shrimps start excessively fanning and "scratching" pleopods (swimmerets, swimming legs). By excessively I mean once a minute. Some shrimps little bit less often, but clearly much more often than other shrimps. Once shrimp starts doing that - it clearly becomes "not well": slows down, not as active, looses colour and usually in 1 week to 2 months dies. Shrimp still eats, even it molts once or twice during that period - behavior never changes back and never "heals".

I was thinking maybe there are some bad chemicals in my tap water that "burn" or some other way damage shrimp pleopods... Or maybe some bacteria...

Maybe somebody knows what could be the reason for this?

29th Jun 2013, 05:34 AM
It could be lack of oxygen, I think.