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MattW

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The latest addition to my glass box, Gammarus pulex. Even after only a matter of days since being introduced, I'm seeing breeding behaviour! Which is great, as I'm hoping to start a large colony.
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When I collect plants, I never treat them for bugs. I put them in a 5 gallon and see what comes out in quarantine. This week I was trying, unsuccessfully, to figure out some Gammarus that appeared. A dragon fly larvae did too, and it went into a water butt that has mosquito larvae. I like dragon flies. But the Gammarus are apart, in a screened greenwater tub. I doubt I'll ever ID them (there are apparently several species around here), but I wanted to see how they'd do, and figured I'd set up a small tank for them when it gets colder.

If they survive the next 2 or 3 weeks, there'll be two of us keeping Gammarus. Funny.

All summer, I had no Daphnia pulex in my cultures, and now with the temperature drop, I have a massive population explosion happening. The ways of small life are mysterious.
 
May I ask do you keep them as a feeding colony or just out of interest?
Both, but until they are established, just interest. I wanted something other than snails, copepods & Hydra in that tank. I may add ostracods if this ecosystem can stay stable.
 

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