Nah not yet....thats today's plan...im pretty stumped at....they are literally all over the lower part of my tank. Glass, sand, rock. But nothing higher than about 2inches above the bottom
I wonder if they've come from the sand?
I also wonder if they are some kind of shellfish.
They sort of look familiar for some reason, but I can't recall having them in my tank or having to scrape them off anything I have bought. I'm thinking they look like little barnacles I've found on items when snorkelling.
You could take a piece of rock that has a number of them on it, place it in an isolated part of the tank or in a fish bag and see if any moves over a few days. I have mussels/clams in my tank that move about every now and then and attach themselves in different places. I wonder if your critters would do this at night too.
I would definitely take a few and smash them with a hammer and see what happens.
Also, I wonder if they could be a type of sponge? I get heaps of those little white pineapple sponges and they tend to multiple rapidly at different times.
So, 1. keep a small rock with them in observation to see if they are mobile - count them and monitor daily. Take photos of nessary.
2. Smash some and see what happens. Hopefully there'll be she'll bits and soft body bits.
