I have a http://www.saltwaterfishshop.com/product_info.php?products_id=108">hasselt goby</a> and a bicolored blenny. They ignore each other.
I believe the rule of thumb is to avoid same or very similar body shapes. Many gobies <u>do</u> look like blennies.
I believe the rule of thumb is to avoid same or very similar body shapes. Many gobies <u>do</u> look like blennies.