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Just was examining my nano tank and noticed this little creature near the heater on the back wall. Any idea? Is it harmless? How would I find him again in the future if I have to take it out? Ty in advance. By the size of the heater you can get an idea on how small it is.
yes, i have very few zoas that came on the live rock i added in. not very colorful but theyre still there. i will remove this critter once i see him again. Thank you.