grobot
New Member
hey guys band new to this forum. seemed like a good place for good advice, so i have a small 20 gallon tank its been up for awhile now and last week i noticed what look a tiny brown pencil eraser looking thing on the sand just lying there. i didn't think much of it untill i fed my fish. i fed my tiger jawfish and randalls goby live brine then left when i came back it was stuck to the bottom of a piece of live rock, then when i touch it it retracted back into a little crevice and spit out pieces of brine shrimp. is it aiptasia?