Clam shrimp - Here are some pics of one I caught wild by dip netting flooded fields. They swim kinda like daphnia by propelling themselves with their antennae. They are much larger than Ostracods. They have a very short lifespan, about 2-3 weeks. The one in these images is about 1/2 inch long.
I have learned a lot more about these animals since the original post, and some of my previous information was wrong. The 2-3 week lifespan applies to the clam shrimp Eulimnadia texana
. They are smaller, translucent clam shrimp. The species in this photo is Cyzicus setosa
, I have observed a lifespan of about 6 months in my aquariums. The females tend to be orange-ish like that photo, and the males tend to be more olive colored. I have taken some much better photos since then, so I figured I would share.
Female with eggs (cysts- white circles just inside the shell on bottom left of image)
another female closeup
I also made a video of clam shrimp mating, not sure if that is allowed here or not. I'll post the link, remove it if its not allowed.
This was made with the video feature on a point and shoot camera, so its definitely not HD, but you can see whats going on for the most part. Sometimes 2 males would hook up with the same female at the same time. There is a lot of thrusting and pushing the females around the tank.
whoa, they unmuted my audio track, its a lot better with the music, lol