After thinking for a while I decided that to make my mudskippers feel at home and possibly engourage them to breed, that I would start the use of burrows in their tank. I currently put in 1 blue tube that is maybe 3-4.5 inches in length and a little more than an inch in diameter at the opening. Is this typically how mudskippers live in burrows in the wild? Please help me. Bonus points if you're an ichthyology nerd.