[hakishimiei]

Short story:

I started seeing shrimps with black coloration (it looks like a tiger shrimp but with a little more black on the body). So i started separating them to my actual 40 gallon long fish tank... I thought maybe the catfish in there will eat it.
I let the tank be as it is and didn't even manage to observe..
Then one day this is what i saw

 

[hakishimiei]

So that means theyre bigger? Because this is bigger than a regular rili even for an adult