Hi!
So I've just witnessed actual cannibalism in my tank.
I saw 1 RCS under about 5-6 others who went completely mental.
The guy wasn't dead, it wasn't just a mold, and I'm relatively sure I wasn't just misinterpreting their playful wrestling.
I've started to fight them off with a chopstick which I use only to manage my shrimp tank, and the victim was limping around, head heavily beaten up.
When I stopped guarding him and fending off the others, they've just jumped back at him.
Prior to this, I was brushing some brown algae on the glass with a tooth brush, which I also use only in my tank, and it was well rinsed before first use.
A few minutes after the brushing, they've started to crowd up around the wall which I was cleaning, and about 15-30 minutes later I saw them ganging up on 1 shrimp.
Did I just invent a way to trigger some sort of battle-royal-reflex on my shrimps?
Is it possible that the scraped brown algae started to stick on that one shrimp in particularly large quanities and he became pretty much a walking sandwich for the others?
It's a 34cm x 24cm x 17cm tank.
I've got around 10 adults, 8-10 medium ones and at least 10 S-XS sized ones, though who knows actually how many of them are there...
Any ideas?
Thanks,
Rob