Hydra; some interesting information

[pixl8r]

No one likes to find that they have hydra infecting their shrimp or crayfish. This article provides some interesting insights to how hydra live.

Here's the direct link if the link above does not work.
http://io9.com/5890685/hydra-dont-need-brains-or-even-eyes-to-see

 

[napsterninja]

Spixi snails (zebra apple snails) put those in and they will eventually get rid of the infestation.