Engineer Gobies with odd but cool behavior?

R1ant04

Member
I added 2 small engineers about two wks ago to my tank and I assumed they would have swam to the bottom of the tank and found some hiding spots n stayed there( that's the type of behavior I've always seen in other tanks)but have not done so...they r always out swimming all over the tank and even at the top near the waterline. This isn't a complaint just wondering if anyone else has ever seen this or did I get a cool pair?
 
Yep when I just added my pair they did the same thing. I don't remember how long it last till they did their cave under rocks
 
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